1737 lines
79 KiB
TypeScript
1737 lines
79 KiB
TypeScript
declare function setTimeout(handler: (...args: any[]) => void, timeout: number): any;
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declare function clearTimeout(handle: any): void;
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namespace ts {
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/**
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* djb2 hashing algorithm
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* http://www.cse.yorku.ca/~oz/hash.html
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*/
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/* @internal */
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export function generateDjb2Hash(data: string): string {
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let acc = 5381;
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for (let i = 0; i < data.length; i++) {
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acc = ((acc << 5) + acc) + data.charCodeAt(i);
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}
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return acc.toString();
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}
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/**
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* Set a high stack trace limit to provide more information in case of an error.
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* Called for command-line and server use cases.
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* Not called if TypeScript is used as a library.
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*/
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/* @internal */
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export function setStackTraceLimit() {
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if ((Error as any).stackTraceLimit < 100) { // Also tests that we won't set the property if it doesn't exist.
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(Error as any).stackTraceLimit = 100;
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}
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}
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export enum FileWatcherEventKind {
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Created,
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Changed,
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Deleted
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}
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export type FileWatcherCallback = (fileName: string, eventKind: FileWatcherEventKind) => void;
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export type DirectoryWatcherCallback = (fileName: string) => void;
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/*@internal*/
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export interface WatchedFile {
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readonly fileName: string;
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readonly callback: FileWatcherCallback;
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mtime: Date;
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}
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/* @internal */
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export enum PollingInterval {
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High = 2000,
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Medium = 500,
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Low = 250
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}
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/* @internal */
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export type HostWatchFile = (fileName: string, callback: FileWatcherCallback, pollingInterval: PollingInterval, options: WatchOptions | undefined) => FileWatcher;
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/* @internal */
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export type HostWatchDirectory = (fileName: string, callback: DirectoryWatcherCallback, recursive: boolean, options: WatchOptions | undefined) => FileWatcher;
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/* @internal */
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export const missingFileModifiedTime = new Date(0); // Any subsequent modification will occur after this time
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interface Levels {
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Low: number;
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Medium: number;
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High: number;
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}
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function createPollingIntervalBasedLevels(levels: Levels) {
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return {
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[PollingInterval.Low]: levels.Low,
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[PollingInterval.Medium]: levels.Medium,
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[PollingInterval.High]: levels.High
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};
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}
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const defaultChunkLevels: Levels = { Low: 32, Medium: 64, High: 256 };
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let pollingChunkSize = createPollingIntervalBasedLevels(defaultChunkLevels);
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/* @internal */
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export let unchangedPollThresholds = createPollingIntervalBasedLevels(defaultChunkLevels);
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/* @internal */
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export function setCustomPollingValues(system: System) {
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if (!system.getEnvironmentVariable) {
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return;
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}
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const pollingIntervalChanged = setCustomLevels("TSC_WATCH_POLLINGINTERVAL", PollingInterval);
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pollingChunkSize = getCustomPollingBasedLevels("TSC_WATCH_POLLINGCHUNKSIZE", defaultChunkLevels) || pollingChunkSize;
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unchangedPollThresholds = getCustomPollingBasedLevels("TSC_WATCH_UNCHANGEDPOLLTHRESHOLDS", defaultChunkLevels) || unchangedPollThresholds;
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function getLevel(envVar: string, level: keyof Levels) {
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return system.getEnvironmentVariable(`${envVar}_${level.toUpperCase()}`);
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}
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function getCustomLevels(baseVariable: string) {
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let customLevels: Partial<Levels> | undefined;
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setCustomLevel("Low");
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setCustomLevel("Medium");
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setCustomLevel("High");
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return customLevels;
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function setCustomLevel(level: keyof Levels) {
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const customLevel = getLevel(baseVariable, level);
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if (customLevel) {
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(customLevels || (customLevels = {}))[level] = Number(customLevel);
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}
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}
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}
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function setCustomLevels(baseVariable: string, levels: Levels) {
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const customLevels = getCustomLevels(baseVariable);
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if (customLevels) {
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setLevel("Low");
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setLevel("Medium");
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setLevel("High");
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return true;
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}
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return false;
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function setLevel(level: keyof Levels) {
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levels[level] = customLevels![level] || levels[level];
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}
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}
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function getCustomPollingBasedLevels(baseVariable: string, defaultLevels: Levels) {
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const customLevels = getCustomLevels(baseVariable);
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return (pollingIntervalChanged || customLevels) &&
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createPollingIntervalBasedLevels(customLevels ? { ...defaultLevels, ...customLevels } : defaultLevels);
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}
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}
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/* @internal */
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export function createDynamicPriorityPollingWatchFile(host: {
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getModifiedTime: NonNullable<System["getModifiedTime"]>;
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setTimeout: NonNullable<System["setTimeout"]>;
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}): HostWatchFile {
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interface WatchedFile extends ts.WatchedFile {
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isClosed?: boolean;
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unchangedPolls: number;
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}
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interface PollingIntervalQueue extends Array<WatchedFile> {
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pollingInterval: PollingInterval;
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pollIndex: number;
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pollScheduled: boolean;
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}
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const watchedFiles: WatchedFile[] = [];
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const changedFilesInLastPoll: WatchedFile[] = [];
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const lowPollingIntervalQueue = createPollingIntervalQueue(PollingInterval.Low);
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const mediumPollingIntervalQueue = createPollingIntervalQueue(PollingInterval.Medium);
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const highPollingIntervalQueue = createPollingIntervalQueue(PollingInterval.High);
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return watchFile;
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function watchFile(fileName: string, callback: FileWatcherCallback, defaultPollingInterval: PollingInterval): FileWatcher {
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const file: WatchedFile = {
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fileName,
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callback,
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unchangedPolls: 0,
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mtime: getModifiedTime(fileName)
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};
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watchedFiles.push(file);
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addToPollingIntervalQueue(file, defaultPollingInterval);
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return {
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close: () => {
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file.isClosed = true;
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// Remove from watchedFiles
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unorderedRemoveItem(watchedFiles, file);
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// Do not update polling interval queue since that will happen as part of polling
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}
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};
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}
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function createPollingIntervalQueue(pollingInterval: PollingInterval): PollingIntervalQueue {
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const queue = [] as WatchedFile[] as PollingIntervalQueue;
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queue.pollingInterval = pollingInterval;
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queue.pollIndex = 0;
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queue.pollScheduled = false;
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return queue;
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}
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function pollPollingIntervalQueue(queue: PollingIntervalQueue) {
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queue.pollIndex = pollQueue(queue, queue.pollingInterval, queue.pollIndex, pollingChunkSize[queue.pollingInterval]);
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// Set the next polling index and timeout
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if (queue.length) {
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scheduleNextPoll(queue.pollingInterval);
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}
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else {
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Debug.assert(queue.pollIndex === 0);
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queue.pollScheduled = false;
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}
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}
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function pollLowPollingIntervalQueue(queue: PollingIntervalQueue) {
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// Always poll complete list of changedFilesInLastPoll
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pollQueue(changedFilesInLastPoll, PollingInterval.Low, /*pollIndex*/ 0, changedFilesInLastPoll.length);
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// Finally do the actual polling of the queue
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pollPollingIntervalQueue(queue);
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// Schedule poll if there are files in changedFilesInLastPoll but no files in the actual queue
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// as pollPollingIntervalQueue wont schedule for next poll
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if (!queue.pollScheduled && changedFilesInLastPoll.length) {
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scheduleNextPoll(PollingInterval.Low);
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}
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}
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function pollQueue(queue: (WatchedFile | undefined)[], pollingInterval: PollingInterval, pollIndex: number, chunkSize: number) {
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// Max visit would be all elements of the queue
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let needsVisit = queue.length;
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let definedValueCopyToIndex = pollIndex;
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for (let polled = 0; polled < chunkSize && needsVisit > 0; nextPollIndex(), needsVisit--) {
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const watchedFile = queue[pollIndex];
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if (!watchedFile) {
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continue;
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}
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else if (watchedFile.isClosed) {
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queue[pollIndex] = undefined;
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continue;
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}
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polled++;
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const fileChanged = onWatchedFileStat(watchedFile, getModifiedTime(watchedFile.fileName));
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if (watchedFile.isClosed) {
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// Closed watcher as part of callback
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queue[pollIndex] = undefined;
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}
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else if (fileChanged) {
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watchedFile.unchangedPolls = 0;
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// Changed files go to changedFilesInLastPoll queue
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if (queue !== changedFilesInLastPoll) {
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queue[pollIndex] = undefined;
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addChangedFileToLowPollingIntervalQueue(watchedFile);
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}
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}
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else if (watchedFile.unchangedPolls !== unchangedPollThresholds[pollingInterval]) {
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watchedFile.unchangedPolls++;
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}
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else if (queue === changedFilesInLastPoll) {
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// Restart unchangedPollCount for unchanged file and move to low polling interval queue
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watchedFile.unchangedPolls = 1;
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queue[pollIndex] = undefined;
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addToPollingIntervalQueue(watchedFile, PollingInterval.Low);
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}
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else if (pollingInterval !== PollingInterval.High) {
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watchedFile.unchangedPolls++;
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queue[pollIndex] = undefined;
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addToPollingIntervalQueue(watchedFile, pollingInterval === PollingInterval.Low ? PollingInterval.Medium : PollingInterval.High);
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}
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if (queue[pollIndex]) {
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// Copy this file to the non hole location
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if (definedValueCopyToIndex < pollIndex) {
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queue[definedValueCopyToIndex] = watchedFile;
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queue[pollIndex] = undefined;
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}
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definedValueCopyToIndex++;
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}
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}
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// Return next poll index
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return pollIndex;
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function nextPollIndex() {
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pollIndex++;
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if (pollIndex === queue.length) {
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if (definedValueCopyToIndex < pollIndex) {
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// There are holes from nextDefinedValueIndex to end of queue, change queue size
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queue.length = definedValueCopyToIndex;
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}
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pollIndex = 0;
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definedValueCopyToIndex = 0;
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}
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}
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}
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function pollingIntervalQueue(pollingInterval: PollingInterval) {
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switch (pollingInterval) {
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case PollingInterval.Low:
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return lowPollingIntervalQueue;
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case PollingInterval.Medium:
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return mediumPollingIntervalQueue;
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case PollingInterval.High:
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return highPollingIntervalQueue;
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}
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}
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function addToPollingIntervalQueue(file: WatchedFile, pollingInterval: PollingInterval) {
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pollingIntervalQueue(pollingInterval).push(file);
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scheduleNextPollIfNotAlreadyScheduled(pollingInterval);
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}
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function addChangedFileToLowPollingIntervalQueue(file: WatchedFile) {
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changedFilesInLastPoll.push(file);
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scheduleNextPollIfNotAlreadyScheduled(PollingInterval.Low);
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}
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function scheduleNextPollIfNotAlreadyScheduled(pollingInterval: PollingInterval) {
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if (!pollingIntervalQueue(pollingInterval).pollScheduled) {
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scheduleNextPoll(pollingInterval);
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}
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}
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function scheduleNextPoll(pollingInterval: PollingInterval) {
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pollingIntervalQueue(pollingInterval).pollScheduled = host.setTimeout(pollingInterval === PollingInterval.Low ? pollLowPollingIntervalQueue : pollPollingIntervalQueue, pollingInterval, pollingIntervalQueue(pollingInterval));
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}
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function getModifiedTime(fileName: string) {
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return host.getModifiedTime(fileName) || missingFileModifiedTime;
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}
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}
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function createUseFsEventsOnParentDirectoryWatchFile(fsWatch: FsWatch, useCaseSensitiveFileNames: boolean): HostWatchFile {
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// One file can have multiple watchers
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const fileWatcherCallbacks = createMultiMap<FileWatcherCallback>();
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const dirWatchers = createMap<DirectoryWatcher>();
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const toCanonicalName = createGetCanonicalFileName(useCaseSensitiveFileNames);
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return nonPollingWatchFile;
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function nonPollingWatchFile(fileName: string, callback: FileWatcherCallback, _pollingInterval: PollingInterval, fallbackOptions: WatchOptions | undefined): FileWatcher {
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const filePath = toCanonicalName(fileName);
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fileWatcherCallbacks.add(filePath, callback);
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const dirPath = getDirectoryPath(filePath) || ".";
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const watcher = dirWatchers.get(dirPath) ||
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createDirectoryWatcher(getDirectoryPath(fileName) || ".", dirPath, fallbackOptions);
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watcher.referenceCount++;
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return {
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close: () => {
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if (watcher.referenceCount === 1) {
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watcher.close();
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dirWatchers.delete(dirPath);
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}
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else {
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watcher.referenceCount--;
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}
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fileWatcherCallbacks.remove(filePath, callback);
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}
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};
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}
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function createDirectoryWatcher(dirName: string, dirPath: string, fallbackOptions: WatchOptions | undefined) {
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const watcher = fsWatch(
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dirName,
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FileSystemEntryKind.Directory,
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(_eventName: string, relativeFileName) => {
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// When files are deleted from disk, the triggered "rename" event would have a relativefileName of "undefined"
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if (!isString(relativeFileName)) { return; }
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const fileName = getNormalizedAbsolutePath(relativeFileName, dirName);
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// Some applications save a working file via rename operations
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const callbacks = fileName && fileWatcherCallbacks.get(toCanonicalName(fileName));
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if (callbacks) {
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for (const fileCallback of callbacks) {
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fileCallback(fileName, FileWatcherEventKind.Changed);
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}
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}
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},
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/*recursive*/ false,
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PollingInterval.Medium,
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fallbackOptions
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) as DirectoryWatcher;
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watcher.referenceCount = 0;
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dirWatchers.set(dirPath, watcher);
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return watcher;
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}
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}
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/* @internal */
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export function createSingleFileWatcherPerName(
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watchFile: HostWatchFile,
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useCaseSensitiveFileNames: boolean
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): HostWatchFile {
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interface SingleFileWatcher {
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watcher: FileWatcher;
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refCount: number;
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}
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const cache = createMap<SingleFileWatcher>();
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const callbacksCache = createMultiMap<FileWatcherCallback>();
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const toCanonicalFileName = createGetCanonicalFileName(useCaseSensitiveFileNames);
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return (fileName, callback, pollingInterval, options) => {
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const path = toCanonicalFileName(fileName);
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const existing = cache.get(path);
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if (existing) {
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existing.refCount++;
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}
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else {
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cache.set(path, {
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watcher: watchFile(
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fileName,
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(fileName, eventKind) => forEach(
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callbacksCache.get(path),
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cb => cb(fileName, eventKind)
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),
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pollingInterval,
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options
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),
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refCount: 1
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});
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}
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callbacksCache.add(path, callback);
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return {
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close: () => {
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const watcher = Debug.checkDefined(cache.get(path));
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callbacksCache.remove(path, callback);
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watcher.refCount--;
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if (watcher.refCount) return;
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cache.delete(path);
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closeFileWatcherOf(watcher);
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}
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};
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};
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}
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/**
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* Returns true if file status changed
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*/
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/*@internal*/
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export function onWatchedFileStat(watchedFile: WatchedFile, modifiedTime: Date): boolean {
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const oldTime = watchedFile.mtime.getTime();
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const newTime = modifiedTime.getTime();
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if (oldTime !== newTime) {
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watchedFile.mtime = modifiedTime;
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watchedFile.callback(watchedFile.fileName, getFileWatcherEventKind(oldTime, newTime));
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return true;
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}
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return false;
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}
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/*@internal*/
|
|
export function getFileWatcherEventKind(oldTime: number, newTime: number) {
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|
return oldTime === 0
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? FileWatcherEventKind.Created
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: newTime === 0
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? FileWatcherEventKind.Deleted
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: FileWatcherEventKind.Changed;
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}
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|
/*@internal*/
|
|
export const ignoredPaths = ["/node_modules/.", "/.git", "/.#"];
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|
/*@internal*/
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|
export let sysLog: (s: string) => void = noop; // eslint-disable-line prefer-const
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|
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/*@internal*/
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|
export function setSysLog(logger: typeof sysLog) {
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sysLog = logger;
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|
}
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|
|
|
/*@internal*/
|
|
export interface RecursiveDirectoryWatcherHost {
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|
watchDirectory: HostWatchDirectory;
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|
useCaseSensitiveFileNames: boolean;
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|
getAccessibleSortedChildDirectories(path: string): readonly string[];
|
|
directoryExists(dir: string): boolean;
|
|
realpath(s: string): string;
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|
setTimeout: NonNullable<System["setTimeout"]>;
|
|
clearTimeout: NonNullable<System["clearTimeout"]>;
|
|
}
|
|
|
|
/**
|
|
* Watch the directory recursively using host provided method to watch child directories
|
|
* that means if this is recursive watcher, watch the children directories as well
|
|
* (eg on OS that dont support recursive watch using fs.watch use fs.watchFile)
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|
*/
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|
/*@internal*/
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|
export function createDirectoryWatcherSupportingRecursive(host: RecursiveDirectoryWatcherHost): HostWatchDirectory {
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interface ChildDirectoryWatcher extends FileWatcher {
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|
dirName: string;
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|
}
|
|
type ChildWatches = readonly ChildDirectoryWatcher[];
|
|
interface HostDirectoryWatcher {
|
|
watcher: FileWatcher;
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|
childWatches: ChildWatches;
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|
refCount: number;
|
|
}
|
|
|
|
const cache = createMap<HostDirectoryWatcher>();
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|
const callbackCache = createMultiMap<{ dirName: string; callback: DirectoryWatcherCallback; }>();
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|
const cacheToUpdateChildWatches = createMap<{ dirName: string; options: WatchOptions | undefined; }>();
|
|
let timerToUpdateChildWatches: any;
|
|
|
|
const filePathComparer = getStringComparer(!host.useCaseSensitiveFileNames);
|
|
const toCanonicalFilePath = createGetCanonicalFileName(host.useCaseSensitiveFileNames);
|
|
|
|
return (dirName, callback, recursive, options) => recursive ?
|
|
createDirectoryWatcher(dirName, options, callback) :
|
|
host.watchDirectory(dirName, callback, recursive, options);
|
|
|
|
/**
|
|
* Create the directory watcher for the dirPath.
|
|
*/
|
|
function createDirectoryWatcher(dirName: string, options: WatchOptions | undefined, callback?: DirectoryWatcherCallback): ChildDirectoryWatcher {
|
|
const dirPath = toCanonicalFilePath(dirName) as Path;
|
|
let directoryWatcher = cache.get(dirPath);
|
|
if (directoryWatcher) {
|
|
directoryWatcher.refCount++;
|
|
}
|
|
else {
|
|
directoryWatcher = {
|
|
watcher: host.watchDirectory(dirName, fileName => {
|
|
if (isIgnoredPath(fileName)) return;
|
|
|
|
if (options?.synchronousWatchDirectory) {
|
|
// Call the actual callback
|
|
invokeCallbacks(dirPath, fileName);
|
|
|
|
// Iterate through existing children and update the watches if needed
|
|
updateChildWatches(dirName, dirPath, options);
|
|
}
|
|
else {
|
|
nonSyncUpdateChildWatches(dirName, dirPath, fileName, options);
|
|
}
|
|
}, /*recursive*/ false, options),
|
|
refCount: 1,
|
|
childWatches: emptyArray
|
|
};
|
|
cache.set(dirPath, directoryWatcher);
|
|
updateChildWatches(dirName, dirPath, options);
|
|
}
|
|
|
|
const callbackToAdd = callback && { dirName, callback };
|
|
if (callbackToAdd) {
|
|
callbackCache.add(dirPath, callbackToAdd);
|
|
}
|
|
|
|
return {
|
|
dirName,
|
|
close: () => {
|
|
const directoryWatcher = Debug.checkDefined(cache.get(dirPath));
|
|
if (callbackToAdd) callbackCache.remove(dirPath, callbackToAdd);
|
|
directoryWatcher.refCount--;
|
|
|
|
if (directoryWatcher.refCount) return;
|
|
|
|
cache.delete(dirPath);
|
|
closeFileWatcherOf(directoryWatcher);
|
|
directoryWatcher.childWatches.forEach(closeFileWatcher);
|
|
}
|
|
};
|
|
}
|
|
|
|
function invokeCallbacks(dirPath: Path, fileNameOrInvokeMap: string | Map<true>) {
|
|
let fileName: string | undefined;
|
|
let invokeMap: Map<true> | undefined;
|
|
if (isString(fileNameOrInvokeMap)) {
|
|
fileName = fileNameOrInvokeMap;
|
|
}
|
|
else {
|
|
invokeMap = fileNameOrInvokeMap;
|
|
}
|
|
// Call the actual callback
|
|
callbackCache.forEach((callbacks, rootDirName) => {
|
|
if (invokeMap && invokeMap.has(rootDirName)) return;
|
|
if (rootDirName === dirPath || (startsWith(dirPath, rootDirName) && dirPath[rootDirName.length] === directorySeparator)) {
|
|
if (invokeMap) {
|
|
invokeMap.set(rootDirName, true);
|
|
}
|
|
else {
|
|
callbacks.forEach(({ callback }) => callback(fileName!));
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
function nonSyncUpdateChildWatches(dirName: string, dirPath: Path, fileName: string, options: WatchOptions | undefined) {
|
|
// Iterate through existing children and update the watches if needed
|
|
const parentWatcher = cache.get(dirPath);
|
|
if (parentWatcher && host.directoryExists(dirName)) {
|
|
// Schedule the update and postpone invoke for callbacks
|
|
scheduleUpdateChildWatches(dirName, dirPath, options);
|
|
return;
|
|
}
|
|
|
|
// Call the actual callbacks and remove child watches
|
|
invokeCallbacks(dirPath, fileName);
|
|
removeChildWatches(parentWatcher);
|
|
}
|
|
|
|
function scheduleUpdateChildWatches(dirName: string, dirPath: Path, options: WatchOptions | undefined) {
|
|
if (!cacheToUpdateChildWatches.has(dirPath)) {
|
|
cacheToUpdateChildWatches.set(dirPath, { dirName, options });
|
|
}
|
|
if (timerToUpdateChildWatches) {
|
|
host.clearTimeout(timerToUpdateChildWatches);
|
|
timerToUpdateChildWatches = undefined;
|
|
}
|
|
timerToUpdateChildWatches = host.setTimeout(onTimerToUpdateChildWatches, 1000);
|
|
}
|
|
|
|
function onTimerToUpdateChildWatches() {
|
|
timerToUpdateChildWatches = undefined;
|
|
sysLog(`sysLog:: onTimerToUpdateChildWatches:: ${cacheToUpdateChildWatches.size}`);
|
|
const start = timestamp();
|
|
const invokeMap = createMap<true>();
|
|
|
|
while (!timerToUpdateChildWatches && cacheToUpdateChildWatches.size) {
|
|
const { value: [dirPath, { dirName, options }], done } = cacheToUpdateChildWatches.entries().next();
|
|
Debug.assert(!done);
|
|
cacheToUpdateChildWatches.delete(dirPath);
|
|
// Because the child refresh is fresh, we would need to invalidate whole root directory being watched
|
|
// to ensure that all the changes are reflected at this time
|
|
invokeCallbacks(dirPath as Path, invokeMap);
|
|
updateChildWatches(dirName, dirPath as Path, options);
|
|
}
|
|
|
|
sysLog(`sysLog:: invokingWatchers:: ${timestamp() - start}ms:: ${cacheToUpdateChildWatches.size}`);
|
|
callbackCache.forEach((callbacks, rootDirName) => {
|
|
if (invokeMap.has(rootDirName)) {
|
|
callbacks.forEach(({ callback, dirName }) => callback(dirName));
|
|
}
|
|
});
|
|
|
|
const elapsed = timestamp() - start;
|
|
sysLog(`sysLog:: Elapsed ${elapsed}ms:: onTimerToUpdateChildWatches:: ${cacheToUpdateChildWatches.size} ${timerToUpdateChildWatches}`);
|
|
}
|
|
|
|
function removeChildWatches(parentWatcher: HostDirectoryWatcher | undefined) {
|
|
if (!parentWatcher) return;
|
|
const existingChildWatches = parentWatcher.childWatches;
|
|
parentWatcher.childWatches = emptyArray;
|
|
for (const childWatcher of existingChildWatches) {
|
|
childWatcher.close();
|
|
removeChildWatches(cache.get(toCanonicalFilePath(childWatcher.dirName)));
|
|
}
|
|
}
|
|
|
|
function updateChildWatches(dirName: string, dirPath: Path, options: WatchOptions | undefined) {
|
|
// Iterate through existing children and update the watches if needed
|
|
const parentWatcher = cache.get(dirPath);
|
|
if (parentWatcher) {
|
|
parentWatcher.childWatches = watchChildDirectories(dirName, parentWatcher.childWatches, options);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Watch the directories in the parentDir
|
|
*/
|
|
function watchChildDirectories(parentDir: string, existingChildWatches: ChildWatches, options: WatchOptions | undefined): ChildWatches {
|
|
let newChildWatches: ChildDirectoryWatcher[] | undefined;
|
|
enumerateInsertsAndDeletes<string, ChildDirectoryWatcher>(
|
|
host.directoryExists(parentDir) ? mapDefined(host.getAccessibleSortedChildDirectories(parentDir), child => {
|
|
const childFullName = getNormalizedAbsolutePath(child, parentDir);
|
|
// Filter our the symbolic link directories since those arent included in recursive watch
|
|
// which is same behaviour when recursive: true is passed to fs.watch
|
|
return !isIgnoredPath(childFullName) && filePathComparer(childFullName, normalizePath(host.realpath(childFullName))) === Comparison.EqualTo ? childFullName : undefined;
|
|
}) : emptyArray,
|
|
existingChildWatches,
|
|
(child, childWatcher) => filePathComparer(child, childWatcher.dirName),
|
|
createAndAddChildDirectoryWatcher,
|
|
closeFileWatcher,
|
|
addChildDirectoryWatcher
|
|
);
|
|
|
|
return newChildWatches || emptyArray;
|
|
|
|
/**
|
|
* Create new childDirectoryWatcher and add it to the new ChildDirectoryWatcher list
|
|
*/
|
|
function createAndAddChildDirectoryWatcher(childName: string) {
|
|
const result = createDirectoryWatcher(childName, options);
|
|
addChildDirectoryWatcher(result);
|
|
}
|
|
|
|
/**
|
|
* Add child directory watcher to the new ChildDirectoryWatcher list
|
|
*/
|
|
function addChildDirectoryWatcher(childWatcher: ChildDirectoryWatcher) {
|
|
(newChildWatches || (newChildWatches = [])).push(childWatcher);
|
|
}
|
|
}
|
|
|
|
function isIgnoredPath(path: string) {
|
|
return some(ignoredPaths, searchPath => isInPath(path, searchPath));
|
|
}
|
|
|
|
function isInPath(path: string, searchPath: string) {
|
|
if (stringContains(path, searchPath)) return true;
|
|
if (host.useCaseSensitiveFileNames) return false;
|
|
return stringContains(toCanonicalFilePath(path), searchPath);
|
|
}
|
|
}
|
|
|
|
/*@internal*/
|
|
export type FsWatchCallback = (eventName: "rename" | "change", relativeFileName: string | undefined) => void;
|
|
/*@internal*/
|
|
export type FsWatch = (fileOrDirectory: string, entryKind: FileSystemEntryKind, callback: FsWatchCallback, recursive: boolean, fallbackPollingInterval: PollingInterval, fallbackOptions: WatchOptions | undefined) => FileWatcher;
|
|
|
|
/*@internal*/
|
|
export const enum FileSystemEntryKind {
|
|
File,
|
|
Directory,
|
|
}
|
|
|
|
/*@internal*/
|
|
export function createFileWatcherCallback(callback: FsWatchCallback): FileWatcherCallback {
|
|
return (_fileName, eventKind) => callback(eventKind === FileWatcherEventKind.Changed ? "change" : "rename", "");
|
|
}
|
|
|
|
function createFsWatchCallbackForFileWatcherCallback(
|
|
fileName: string,
|
|
callback: FileWatcherCallback,
|
|
fileExists: System["fileExists"]
|
|
): FsWatchCallback {
|
|
return eventName => {
|
|
if (eventName === "rename") {
|
|
callback(fileName, fileExists(fileName) ? FileWatcherEventKind.Created : FileWatcherEventKind.Deleted);
|
|
}
|
|
else {
|
|
// Change
|
|
callback(fileName, FileWatcherEventKind.Changed);
|
|
}
|
|
};
|
|
}
|
|
|
|
function createFsWatchCallbackForDirectoryWatcherCallback(directoryName: string, callback: DirectoryWatcherCallback): FsWatchCallback {
|
|
return (eventName, relativeFileName) => {
|
|
// In watchDirectory we only care about adding and removing files (when event name is
|
|
// "rename"); changes made within files are handled by corresponding fileWatchers (when
|
|
// event name is "change")
|
|
if (eventName === "rename") {
|
|
// When deleting a file, the passed baseFileName is null
|
|
callback(!relativeFileName ? directoryName : normalizePath(combinePaths(directoryName, relativeFileName)));
|
|
}
|
|
};
|
|
}
|
|
|
|
/*@internal*/
|
|
export interface CreateSystemWatchFunctions {
|
|
// Polling watch file
|
|
pollingWatchFile: HostWatchFile;
|
|
// For dynamic polling watch file
|
|
getModifiedTime: NonNullable<System["getModifiedTime"]>;
|
|
setTimeout: NonNullable<System["setTimeout"]>;
|
|
clearTimeout: NonNullable<System["clearTimeout"]>;
|
|
// For fs events :
|
|
fsWatch: FsWatch;
|
|
fileExists: System["fileExists"];
|
|
useCaseSensitiveFileNames: boolean;
|
|
fsSupportsRecursiveFsWatch: boolean;
|
|
directoryExists: System["directoryExists"];
|
|
getAccessibleSortedChildDirectories(path: string): readonly string[];
|
|
realpath(s: string): string;
|
|
// For backward compatibility environment variables
|
|
tscWatchFile: string | undefined;
|
|
useNonPollingWatchers?: boolean;
|
|
tscWatchDirectory: string | undefined;
|
|
}
|
|
|
|
/*@internal*/
|
|
export function createSystemWatchFunctions({
|
|
pollingWatchFile,
|
|
getModifiedTime,
|
|
setTimeout,
|
|
clearTimeout,
|
|
fsWatch,
|
|
fileExists,
|
|
useCaseSensitiveFileNames,
|
|
fsSupportsRecursiveFsWatch,
|
|
directoryExists,
|
|
getAccessibleSortedChildDirectories,
|
|
realpath,
|
|
tscWatchFile,
|
|
useNonPollingWatchers,
|
|
tscWatchDirectory,
|
|
}: CreateSystemWatchFunctions): { watchFile: HostWatchFile; watchDirectory: HostWatchDirectory; } {
|
|
let dynamicPollingWatchFile: HostWatchFile | undefined;
|
|
let nonPollingWatchFile: HostWatchFile | undefined;
|
|
let hostRecursiveDirectoryWatcher: HostWatchDirectory | undefined;
|
|
return {
|
|
watchFile,
|
|
watchDirectory
|
|
};
|
|
|
|
function watchFile(fileName: string, callback: FileWatcherCallback, pollingInterval: PollingInterval, options: WatchOptions | undefined): FileWatcher {
|
|
options = updateOptionsForWatchFile(options, useNonPollingWatchers);
|
|
const watchFileKind = Debug.checkDefined(options.watchFile);
|
|
switch (watchFileKind) {
|
|
case WatchFileKind.FixedPollingInterval:
|
|
return pollingWatchFile(fileName, callback, PollingInterval.Low, /*options*/ undefined);
|
|
case WatchFileKind.PriorityPollingInterval:
|
|
return pollingWatchFile(fileName, callback, pollingInterval, /*options*/ undefined);
|
|
case WatchFileKind.DynamicPriorityPolling:
|
|
return ensureDynamicPollingWatchFile()(fileName, callback, pollingInterval, /*options*/ undefined);
|
|
case WatchFileKind.UseFsEvents:
|
|
return fsWatch(
|
|
fileName,
|
|
FileSystemEntryKind.File,
|
|
createFsWatchCallbackForFileWatcherCallback(fileName, callback, fileExists),
|
|
/*recursive*/ false,
|
|
pollingInterval,
|
|
getFallbackOptions(options)
|
|
);
|
|
case WatchFileKind.UseFsEventsOnParentDirectory:
|
|
if (!nonPollingWatchFile) {
|
|
nonPollingWatchFile = createUseFsEventsOnParentDirectoryWatchFile(fsWatch, useCaseSensitiveFileNames);
|
|
}
|
|
return nonPollingWatchFile(fileName, callback, pollingInterval, getFallbackOptions(options));
|
|
default:
|
|
Debug.assertNever(watchFileKind);
|
|
}
|
|
}
|
|
|
|
function ensureDynamicPollingWatchFile() {
|
|
return dynamicPollingWatchFile ||
|
|
(dynamicPollingWatchFile = createDynamicPriorityPollingWatchFile({ getModifiedTime, setTimeout }));
|
|
}
|
|
|
|
function updateOptionsForWatchFile(options: WatchOptions | undefined, useNonPollingWatchers?: boolean): WatchOptions {
|
|
if (options && options.watchFile !== undefined) return options;
|
|
switch (tscWatchFile) {
|
|
case "PriorityPollingInterval":
|
|
// Use polling interval based on priority when create watch using host.watchFile
|
|
return { watchFile: WatchFileKind.PriorityPollingInterval };
|
|
case "DynamicPriorityPolling":
|
|
// Use polling interval but change the interval depending on file changes and their default polling interval
|
|
return { watchFile: WatchFileKind.DynamicPriorityPolling };
|
|
case "UseFsEvents":
|
|
// Use notifications from FS to watch with falling back to fs.watchFile
|
|
return generateWatchFileOptions(WatchFileKind.UseFsEvents, PollingWatchKind.PriorityInterval, options);
|
|
case "UseFsEventsWithFallbackDynamicPolling":
|
|
// Use notifications from FS to watch with falling back to dynamic watch file
|
|
return generateWatchFileOptions(WatchFileKind.UseFsEvents, PollingWatchKind.DynamicPriority, options);
|
|
case "UseFsEventsOnParentDirectory":
|
|
useNonPollingWatchers = true;
|
|
// fall through
|
|
default:
|
|
return useNonPollingWatchers ?
|
|
// Use notifications from FS to watch with falling back to fs.watchFile
|
|
generateWatchFileOptions(WatchFileKind.UseFsEventsOnParentDirectory, PollingWatchKind.PriorityInterval, options) :
|
|
// Default to do not use fixed polling interval
|
|
{ watchFile: WatchFileKind.FixedPollingInterval };
|
|
}
|
|
}
|
|
|
|
function generateWatchFileOptions(
|
|
watchFile: WatchFileKind,
|
|
fallbackPolling: PollingWatchKind,
|
|
options: WatchOptions | undefined
|
|
): WatchOptions {
|
|
const defaultFallbackPolling = options?.fallbackPolling;
|
|
return {
|
|
watchFile,
|
|
fallbackPolling: defaultFallbackPolling === undefined ?
|
|
fallbackPolling :
|
|
defaultFallbackPolling
|
|
};
|
|
}
|
|
|
|
function watchDirectory(directoryName: string, callback: DirectoryWatcherCallback, recursive: boolean, options: WatchOptions | undefined): FileWatcher {
|
|
if (fsSupportsRecursiveFsWatch) {
|
|
return fsWatch(
|
|
directoryName,
|
|
FileSystemEntryKind.Directory,
|
|
createFsWatchCallbackForDirectoryWatcherCallback(directoryName, callback),
|
|
recursive,
|
|
PollingInterval.Medium,
|
|
getFallbackOptions(options)
|
|
);
|
|
}
|
|
|
|
if (!hostRecursiveDirectoryWatcher) {
|
|
hostRecursiveDirectoryWatcher = createDirectoryWatcherSupportingRecursive({
|
|
useCaseSensitiveFileNames,
|
|
directoryExists,
|
|
getAccessibleSortedChildDirectories,
|
|
watchDirectory: nonRecursiveWatchDirectory,
|
|
realpath,
|
|
setTimeout,
|
|
clearTimeout
|
|
});
|
|
}
|
|
return hostRecursiveDirectoryWatcher(directoryName, callback, recursive, options);
|
|
}
|
|
|
|
function nonRecursiveWatchDirectory(directoryName: string, callback: DirectoryWatcherCallback, recursive: boolean, options: WatchOptions | undefined): FileWatcher {
|
|
Debug.assert(!recursive);
|
|
options = updateOptionsForWatchDirectory(options);
|
|
const watchDirectoryKind = Debug.checkDefined(options.watchDirectory);
|
|
switch (watchDirectoryKind) {
|
|
case WatchDirectoryKind.FixedPollingInterval:
|
|
return pollingWatchFile(
|
|
directoryName,
|
|
() => callback(directoryName),
|
|
PollingInterval.Medium,
|
|
/*options*/ undefined
|
|
);
|
|
case WatchDirectoryKind.DynamicPriorityPolling:
|
|
return ensureDynamicPollingWatchFile()(
|
|
directoryName,
|
|
() => callback(directoryName),
|
|
PollingInterval.Medium,
|
|
/*options*/ undefined
|
|
);
|
|
case WatchDirectoryKind.UseFsEvents:
|
|
return fsWatch(
|
|
directoryName,
|
|
FileSystemEntryKind.Directory,
|
|
createFsWatchCallbackForDirectoryWatcherCallback(directoryName, callback),
|
|
recursive,
|
|
PollingInterval.Medium,
|
|
getFallbackOptions(options)
|
|
);
|
|
default:
|
|
Debug.assertNever(watchDirectoryKind);
|
|
}
|
|
}
|
|
|
|
function updateOptionsForWatchDirectory(options: WatchOptions | undefined): WatchOptions {
|
|
if (options && options.watchDirectory !== undefined) return options;
|
|
switch (tscWatchDirectory) {
|
|
case "RecursiveDirectoryUsingFsWatchFile":
|
|
// Use polling interval based on priority when create watch using host.watchFile
|
|
return { watchDirectory: WatchDirectoryKind.FixedPollingInterval };
|
|
case "RecursiveDirectoryUsingDynamicPriorityPolling":
|
|
// Use polling interval but change the interval depending on file changes and their default polling interval
|
|
return { watchDirectory: WatchDirectoryKind.DynamicPriorityPolling };
|
|
default:
|
|
const defaultFallbackPolling = options?.fallbackPolling;
|
|
return {
|
|
watchDirectory: WatchDirectoryKind.UseFsEvents,
|
|
fallbackPolling: defaultFallbackPolling !== undefined ?
|
|
defaultFallbackPolling :
|
|
undefined
|
|
};
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* patch writefile to create folder before writing the file
|
|
*/
|
|
/*@internal*/
|
|
export function patchWriteFileEnsuringDirectory(sys: System) {
|
|
// patch writefile to create folder before writing the file
|
|
const originalWriteFile = sys.writeFile;
|
|
sys.writeFile = (path, data, writeBom) =>
|
|
writeFileEnsuringDirectories(
|
|
path,
|
|
data,
|
|
!!writeBom,
|
|
(path, data, writeByteOrderMark) => originalWriteFile.call(sys, path, data, writeByteOrderMark),
|
|
path => sys.createDirectory(path),
|
|
path => sys.directoryExists(path));
|
|
}
|
|
|
|
/*@internal*/
|
|
export type BufferEncoding = "ascii" | "utf8" | "utf-8" | "utf16le" | "ucs2" | "ucs-2" | "base64" | "latin1" | "binary" | "hex";
|
|
|
|
/*@internal*/
|
|
interface NodeBuffer extends Uint8Array {
|
|
constructor: any;
|
|
write(str: string, encoding?: BufferEncoding): number;
|
|
write(str: string, offset: number, encoding?: BufferEncoding): number;
|
|
write(str: string, offset: number, length: number, encoding?: BufferEncoding): number;
|
|
toString(encoding?: string, start?: number, end?: number): string;
|
|
toJSON(): { type: "Buffer"; data: number[] };
|
|
equals(otherBuffer: Uint8Array): boolean;
|
|
compare(
|
|
otherBuffer: Uint8Array,
|
|
targetStart?: number,
|
|
targetEnd?: number,
|
|
sourceStart?: number,
|
|
sourceEnd?: number
|
|
): number;
|
|
copy(targetBuffer: Uint8Array, targetStart?: number, sourceStart?: number, sourceEnd?: number): number;
|
|
slice(begin?: number, end?: number): Buffer;
|
|
subarray(begin?: number, end?: number): Buffer;
|
|
writeUIntLE(value: number, offset: number, byteLength: number): number;
|
|
writeUIntBE(value: number, offset: number, byteLength: number): number;
|
|
writeIntLE(value: number, offset: number, byteLength: number): number;
|
|
writeIntBE(value: number, offset: number, byteLength: number): number;
|
|
readUIntLE(offset: number, byteLength: number): number;
|
|
readUIntBE(offset: number, byteLength: number): number;
|
|
readIntLE(offset: number, byteLength: number): number;
|
|
readIntBE(offset: number, byteLength: number): number;
|
|
readUInt8(offset: number): number;
|
|
readUInt16LE(offset: number): number;
|
|
readUInt16BE(offset: number): number;
|
|
readUInt32LE(offset: number): number;
|
|
readUInt32BE(offset: number): number;
|
|
readInt8(offset: number): number;
|
|
readInt16LE(offset: number): number;
|
|
readInt16BE(offset: number): number;
|
|
readInt32LE(offset: number): number;
|
|
readInt32BE(offset: number): number;
|
|
readFloatLE(offset: number): number;
|
|
readFloatBE(offset: number): number;
|
|
readDoubleLE(offset: number): number;
|
|
readDoubleBE(offset: number): number;
|
|
reverse(): this;
|
|
swap16(): Buffer;
|
|
swap32(): Buffer;
|
|
swap64(): Buffer;
|
|
writeUInt8(value: number, offset: number): number;
|
|
writeUInt16LE(value: number, offset: number): number;
|
|
writeUInt16BE(value: number, offset: number): number;
|
|
writeUInt32LE(value: number, offset: number): number;
|
|
writeUInt32BE(value: number, offset: number): number;
|
|
writeInt8(value: number, offset: number): number;
|
|
writeInt16LE(value: number, offset: number): number;
|
|
writeInt16BE(value: number, offset: number): number;
|
|
writeInt32LE(value: number, offset: number): number;
|
|
writeInt32BE(value: number, offset: number): number;
|
|
writeFloatLE(value: number, offset: number): number;
|
|
writeFloatBE(value: number, offset: number): number;
|
|
writeDoubleLE(value: number, offset: number): number;
|
|
writeDoubleBE(value: number, offset: number): number;
|
|
readBigUInt64BE?(offset?: number): bigint;
|
|
readBigUInt64LE?(offset?: number): bigint;
|
|
readBigInt64BE?(offset?: number): bigint;
|
|
readBigInt64LE?(offset?: number): bigint;
|
|
writeBigInt64BE?(value: bigint, offset?: number): number;
|
|
writeBigInt64LE?(value: bigint, offset?: number): number;
|
|
writeBigUInt64BE?(value: bigint, offset?: number): number;
|
|
writeBigUInt64LE?(value: bigint, offset?: number): number;
|
|
fill(value: string | Uint8Array | number, offset?: number, end?: number, encoding?: BufferEncoding): this;
|
|
indexOf(value: string | number | Uint8Array, byteOffset?: number, encoding?: BufferEncoding): number;
|
|
lastIndexOf(value: string | number | Uint8Array, byteOffset?: number, encoding?: BufferEncoding): number;
|
|
entries(): IterableIterator<[number, number]>;
|
|
includes(value: string | number | Buffer, byteOffset?: number, encoding?: BufferEncoding): boolean;
|
|
keys(): IterableIterator<number>;
|
|
values(): IterableIterator<number>;
|
|
}
|
|
|
|
/*@internal*/
|
|
interface Buffer extends NodeBuffer { }
|
|
|
|
// TODO: GH#18217 Methods on System are often used as if they are certainly defined
|
|
export interface System {
|
|
args: string[];
|
|
newLine: string;
|
|
useCaseSensitiveFileNames: boolean;
|
|
write(s: string): void;
|
|
writeOutputIsTTY?(): boolean;
|
|
readFile(path: string, encoding?: string): string | undefined;
|
|
getFileSize?(path: string): number;
|
|
writeFile(path: string, data: string, writeByteOrderMark?: boolean): void;
|
|
|
|
/**
|
|
* @pollingInterval - this parameter is used in polling-based watchers and ignored in watchers that
|
|
* use native OS file watching
|
|
*/
|
|
watchFile?(path: string, callback: FileWatcherCallback, pollingInterval?: number, options?: WatchOptions): FileWatcher;
|
|
watchDirectory?(path: string, callback: DirectoryWatcherCallback, recursive?: boolean, options?: WatchOptions): FileWatcher;
|
|
resolvePath(path: string): string;
|
|
fileExists(path: string): boolean;
|
|
directoryExists(path: string): boolean;
|
|
createDirectory(path: string): void;
|
|
getExecutingFilePath(): string;
|
|
getCurrentDirectory(): string;
|
|
getDirectories(path: string): string[];
|
|
readDirectory(path: string, extensions?: readonly string[], exclude?: readonly string[], include?: readonly string[], depth?: number): string[];
|
|
getModifiedTime?(path: string): Date | undefined;
|
|
setModifiedTime?(path: string, time: Date): void;
|
|
deleteFile?(path: string): void;
|
|
/**
|
|
* A good implementation is node.js' `crypto.createHash`. (https://nodejs.org/api/crypto.html#crypto_crypto_createhash_algorithm)
|
|
*/
|
|
createHash?(data: string): string;
|
|
/** This must be cryptographically secure. Only implement this method using `crypto.createHash("sha256")`. */
|
|
createSHA256Hash?(data: string): string;
|
|
getMemoryUsage?(): number;
|
|
exit(exitCode?: number): void;
|
|
/*@internal*/ enableCPUProfiler?(path: string, continuation: () => void): boolean;
|
|
/*@internal*/ disableCPUProfiler?(continuation: () => void): boolean;
|
|
realpath?(path: string): string;
|
|
/*@internal*/ getEnvironmentVariable(name: string): string;
|
|
/*@internal*/ tryEnableSourceMapsForHost?(): void;
|
|
/*@internal*/ debugMode?: boolean;
|
|
setTimeout?(callback: (...args: any[]) => void, ms: number, ...args: any[]): any;
|
|
clearTimeout?(timeoutId: any): void;
|
|
clearScreen?(): void;
|
|
/*@internal*/ setBlocking?(): void;
|
|
base64decode?(input: string): string;
|
|
base64encode?(input: string): string;
|
|
/*@internal*/ bufferFrom?(input: string, encoding?: string): Buffer;
|
|
// For testing
|
|
/*@internal*/ now?(): Date;
|
|
/*@internal*/ require?(baseDir: string, moduleName: string): RequireResult;
|
|
}
|
|
|
|
export interface FileWatcher {
|
|
close(): void;
|
|
}
|
|
|
|
interface DirectoryWatcher extends FileWatcher {
|
|
referenceCount: number;
|
|
}
|
|
|
|
declare const require: any;
|
|
declare const process: any;
|
|
declare const global: any;
|
|
declare const __filename: string;
|
|
declare const __dirname: string;
|
|
|
|
export function getNodeMajorVersion(): number | undefined {
|
|
if (typeof process === "undefined") {
|
|
return undefined;
|
|
}
|
|
const version: string = process.version;
|
|
if (!version) {
|
|
return undefined;
|
|
}
|
|
const dot = version.indexOf(".");
|
|
if (dot === -1) {
|
|
return undefined;
|
|
}
|
|
return parseInt(version.substring(1, dot));
|
|
}
|
|
|
|
// TODO: GH#18217 this is used as if it's certainly defined in many places.
|
|
// eslint-disable-next-line prefer-const
|
|
export let sys: System = (() => {
|
|
// NodeJS detects "\uFEFF" at the start of the string and *replaces* it with the actual
|
|
// byte order mark from the specified encoding. Using any other byte order mark does
|
|
// not actually work.
|
|
const byteOrderMarkIndicator = "\uFEFF";
|
|
|
|
function getNodeSystem(): System {
|
|
const nativePattern = /^native |^\([^)]+\)$|^(internal[\\/]|[a-zA-Z0-9_\s]+(\.js)?$)/;
|
|
const _fs: typeof import("fs") = require("fs");
|
|
const _path: typeof import("path") = require("path");
|
|
const _os = require("os");
|
|
// crypto can be absent on reduced node installations
|
|
let _crypto: typeof import("crypto") | undefined;
|
|
try {
|
|
_crypto = require("crypto");
|
|
}
|
|
catch {
|
|
_crypto = undefined;
|
|
}
|
|
let activeSession: import("inspector").Session | "stopping" | undefined;
|
|
let profilePath = "./profile.cpuprofile";
|
|
|
|
const Buffer: {
|
|
new (input: string, encoding?: string): any;
|
|
from?(input: string, encoding?: string): any;
|
|
} = require("buffer").Buffer;
|
|
|
|
const nodeVersion = getNodeMajorVersion();
|
|
const isNode4OrLater = nodeVersion! >= 4;
|
|
const isLinuxOrMacOs = process.platform === "linux" || process.platform === "darwin";
|
|
|
|
const platform: string = _os.platform();
|
|
const useCaseSensitiveFileNames = isFileSystemCaseSensitive();
|
|
const fsSupportsRecursiveFsWatch = isNode4OrLater && (process.platform === "win32" || process.platform === "darwin");
|
|
const { watchFile, watchDirectory } = createSystemWatchFunctions({
|
|
pollingWatchFile: createSingleFileWatcherPerName(fsWatchFileWorker, useCaseSensitiveFileNames),
|
|
getModifiedTime,
|
|
setTimeout,
|
|
clearTimeout,
|
|
fsWatch,
|
|
useCaseSensitiveFileNames,
|
|
fileExists,
|
|
// Node 4.0 `fs.watch` function supports the "recursive" option on both OSX and Windows
|
|
// (ref: https://github.com/nodejs/node/pull/2649 and https://github.com/Microsoft/TypeScript/issues/4643)
|
|
fsSupportsRecursiveFsWatch,
|
|
directoryExists,
|
|
getAccessibleSortedChildDirectories: path => getAccessibleFileSystemEntries(path).directories,
|
|
realpath,
|
|
tscWatchFile: process.env.TSC_WATCHFILE,
|
|
useNonPollingWatchers: process.env.TSC_NONPOLLING_WATCHER,
|
|
tscWatchDirectory: process.env.TSC_WATCHDIRECTORY,
|
|
});
|
|
const nodeSystem: System = {
|
|
args: process.argv.slice(2),
|
|
newLine: _os.EOL,
|
|
useCaseSensitiveFileNames,
|
|
write(s: string): void {
|
|
process.stdout.write(s);
|
|
},
|
|
writeOutputIsTTY() {
|
|
return process.stdout.isTTY;
|
|
},
|
|
readFile,
|
|
writeFile,
|
|
watchFile,
|
|
watchDirectory,
|
|
resolvePath: path => _path.resolve(path),
|
|
fileExists,
|
|
directoryExists,
|
|
createDirectory(directoryName: string) {
|
|
if (!nodeSystem.directoryExists(directoryName)) {
|
|
// Wrapped in a try-catch to prevent crashing if we are in a race
|
|
// with another copy of ourselves to create the same directory
|
|
try {
|
|
_fs.mkdirSync(directoryName);
|
|
}
|
|
catch (e) {
|
|
if (e.code !== "EEXIST") {
|
|
// Failed for some other reason (access denied?); still throw
|
|
throw e;
|
|
}
|
|
}
|
|
}
|
|
},
|
|
getExecutingFilePath() {
|
|
return __filename;
|
|
},
|
|
getCurrentDirectory() {
|
|
return process.cwd();
|
|
},
|
|
getDirectories,
|
|
getEnvironmentVariable(name: string) {
|
|
return process.env[name] || "";
|
|
},
|
|
readDirectory,
|
|
getModifiedTime,
|
|
setModifiedTime,
|
|
deleteFile,
|
|
createHash: _crypto ? createSHA256Hash : generateDjb2Hash,
|
|
createSHA256Hash: _crypto ? createSHA256Hash : undefined,
|
|
getMemoryUsage() {
|
|
if (global.gc) {
|
|
global.gc();
|
|
}
|
|
return process.memoryUsage().heapUsed;
|
|
},
|
|
getFileSize(path) {
|
|
try {
|
|
const stat = _fs.statSync(path);
|
|
if (stat.isFile()) {
|
|
return stat.size;
|
|
}
|
|
}
|
|
catch { /*ignore*/ }
|
|
return 0;
|
|
},
|
|
exit(exitCode?: number): void {
|
|
disableCPUProfiler(() => process.exit(exitCode));
|
|
},
|
|
enableCPUProfiler,
|
|
disableCPUProfiler,
|
|
realpath,
|
|
debugMode: !!process.env.NODE_INSPECTOR_IPC || some(<string[]>process.execArgv, arg => /^--(inspect|debug)(-brk)?(=\d+)?$/i.test(arg)),
|
|
tryEnableSourceMapsForHost() {
|
|
try {
|
|
require("source-map-support").install();
|
|
}
|
|
catch {
|
|
// Could not enable source maps.
|
|
}
|
|
},
|
|
setTimeout,
|
|
clearTimeout,
|
|
clearScreen: () => {
|
|
process.stdout.write("\x1Bc");
|
|
},
|
|
setBlocking: () => {
|
|
if (process.stdout && process.stdout._handle && process.stdout._handle.setBlocking) {
|
|
process.stdout._handle.setBlocking(true);
|
|
}
|
|
},
|
|
bufferFrom,
|
|
base64decode: input => bufferFrom(input, "base64").toString("utf8"),
|
|
base64encode: input => bufferFrom(input).toString("base64"),
|
|
require: (baseDir, moduleName) => {
|
|
try {
|
|
const modulePath = resolveJSModule(moduleName, baseDir, nodeSystem);
|
|
return { module: require(modulePath), modulePath, error: undefined };
|
|
}
|
|
catch (error) {
|
|
return { module: undefined, modulePath: undefined, error };
|
|
}
|
|
}
|
|
};
|
|
return nodeSystem;
|
|
|
|
/**
|
|
* Uses the builtin inspector APIs to capture a CPU profile
|
|
* See https://nodejs.org/api/inspector.html#inspector_example_usage for details
|
|
*/
|
|
function enableCPUProfiler(path: string, cb: () => void) {
|
|
if (activeSession) {
|
|
cb();
|
|
return false;
|
|
}
|
|
const inspector: typeof import("inspector") = require("inspector");
|
|
if (!inspector || !inspector.Session) {
|
|
cb();
|
|
return false;
|
|
}
|
|
const session = new inspector.Session();
|
|
session.connect();
|
|
|
|
session.post("Profiler.enable", () => {
|
|
session.post("Profiler.start", () => {
|
|
activeSession = session;
|
|
profilePath = path;
|
|
cb();
|
|
});
|
|
});
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Strips non-TS paths from the profile, so users with private projects shouldn't
|
|
* need to worry about leaking paths by submitting a cpu profile to us
|
|
*/
|
|
function cleanupPaths(profile: import("inspector").Profiler.Profile) {
|
|
let externalFileCounter = 0;
|
|
const remappedPaths = createMap<string>();
|
|
const normalizedDir = normalizeSlashes(__dirname);
|
|
// Windows rooted dir names need an extra `/` prepended to be valid file:/// urls
|
|
const fileUrlRoot = `file://${getRootLength(normalizedDir) === 1 ? "" : "/"}${normalizedDir}`;
|
|
for (const node of profile.nodes) {
|
|
if (node.callFrame.url) {
|
|
const url = normalizeSlashes(node.callFrame.url);
|
|
if (containsPath(fileUrlRoot, url, useCaseSensitiveFileNames)) {
|
|
node.callFrame.url = getRelativePathToDirectoryOrUrl(fileUrlRoot, url, fileUrlRoot, createGetCanonicalFileName(useCaseSensitiveFileNames), /*isAbsolutePathAnUrl*/ true);
|
|
}
|
|
else if (!nativePattern.test(url)) {
|
|
node.callFrame.url = (remappedPaths.has(url) ? remappedPaths : remappedPaths.set(url, `external${externalFileCounter}.js`)).get(url)!;
|
|
externalFileCounter++;
|
|
}
|
|
}
|
|
}
|
|
return profile;
|
|
}
|
|
|
|
function disableCPUProfiler(cb: () => void) {
|
|
if (activeSession && activeSession !== "stopping") {
|
|
const s = activeSession;
|
|
activeSession.post("Profiler.stop", (err, { profile }) => {
|
|
if (!err) {
|
|
try {
|
|
if (_fs.statSync(profilePath).isDirectory()) {
|
|
profilePath = _path.join(profilePath, `${(new Date()).toISOString().replace(/:/g, "-")}+P${process.pid}.cpuprofile`);
|
|
}
|
|
}
|
|
catch {
|
|
// do nothing and ignore fallible fs operation
|
|
}
|
|
try {
|
|
_fs.mkdirSync(_path.dirname(profilePath), { recursive: true });
|
|
}
|
|
catch {
|
|
// do nothing and ignore fallible fs operation
|
|
}
|
|
_fs.writeFileSync(profilePath, JSON.stringify(cleanupPaths(profile)));
|
|
}
|
|
activeSession = undefined;
|
|
s.disconnect();
|
|
cb();
|
|
});
|
|
activeSession = "stopping";
|
|
return true;
|
|
}
|
|
else {
|
|
cb();
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function bufferFrom(input: string, encoding?: string): Buffer {
|
|
// See https://github.com/Microsoft/TypeScript/issues/25652
|
|
return Buffer.from && (Buffer.from as Function) !== Int8Array.from
|
|
? Buffer.from(input, encoding)
|
|
: new Buffer(input, encoding);
|
|
}
|
|
|
|
function isFileSystemCaseSensitive(): boolean {
|
|
// win32\win64 are case insensitive platforms
|
|
if (platform === "win32" || platform === "win64") {
|
|
return false;
|
|
}
|
|
// If this file exists under a different case, we must be case-insensitve.
|
|
return !fileExists(swapCase(__filename));
|
|
}
|
|
|
|
/** Convert all lowercase chars to uppercase, and vice-versa */
|
|
function swapCase(s: string): string {
|
|
return s.replace(/\w/g, (ch) => {
|
|
const up = ch.toUpperCase();
|
|
return ch === up ? ch.toLowerCase() : up;
|
|
});
|
|
}
|
|
|
|
function fsWatchFileWorker(fileName: string, callback: FileWatcherCallback, pollingInterval: number): FileWatcher {
|
|
_fs.watchFile(fileName, { persistent: true, interval: pollingInterval }, fileChanged);
|
|
let eventKind: FileWatcherEventKind;
|
|
return {
|
|
close: () => _fs.unwatchFile(fileName, fileChanged)
|
|
};
|
|
|
|
function fileChanged(curr: any, prev: any) {
|
|
// previous event kind check is to ensure we recongnize the file as previously also missing when it is restored or renamed twice (that is it disappears and reappears)
|
|
// In such case, prevTime returned is same as prev time of event when file was deleted as per node documentation
|
|
const isPreviouslyDeleted = +prev.mtime === 0 || eventKind === FileWatcherEventKind.Deleted;
|
|
if (+curr.mtime === 0) {
|
|
if (isPreviouslyDeleted) {
|
|
// Already deleted file, no need to callback again
|
|
return;
|
|
}
|
|
eventKind = FileWatcherEventKind.Deleted;
|
|
}
|
|
else if (isPreviouslyDeleted) {
|
|
eventKind = FileWatcherEventKind.Created;
|
|
}
|
|
// If there is no change in modified time, ignore the event
|
|
else if (+curr.mtime === +prev.mtime) {
|
|
return;
|
|
}
|
|
else {
|
|
// File changed
|
|
eventKind = FileWatcherEventKind.Changed;
|
|
}
|
|
callback(fileName, eventKind);
|
|
}
|
|
}
|
|
|
|
function fsWatch(
|
|
fileOrDirectory: string,
|
|
entryKind: FileSystemEntryKind,
|
|
callback: FsWatchCallback,
|
|
recursive: boolean,
|
|
fallbackPollingInterval: PollingInterval,
|
|
fallbackOptions: WatchOptions | undefined
|
|
): FileWatcher {
|
|
let options: any;
|
|
let lastDirectoryPartWithDirectorySeparator: string | undefined;
|
|
let lastDirectoryPart: string | undefined;
|
|
if (isLinuxOrMacOs) {
|
|
lastDirectoryPartWithDirectorySeparator = fileOrDirectory.substr(fileOrDirectory.lastIndexOf(directorySeparator));
|
|
lastDirectoryPart = lastDirectoryPartWithDirectorySeparator.slice(directorySeparator.length);
|
|
}
|
|
/** Watcher for the file system entry depending on whether it is missing or present */
|
|
let watcher = !fileSystemEntryExists(fileOrDirectory, entryKind) ?
|
|
watchMissingFileSystemEntry() :
|
|
watchPresentFileSystemEntry();
|
|
return {
|
|
close: () => {
|
|
// Close the watcher (either existing file system entry watcher or missing file system entry watcher)
|
|
watcher.close();
|
|
watcher = undefined!;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* Invoke the callback with rename and update the watcher if not closed
|
|
* @param createWatcher
|
|
*/
|
|
function invokeCallbackAndUpdateWatcher(createWatcher: () => FileWatcher) {
|
|
sysLog(`sysLog:: ${fileOrDirectory}:: Changing watcher to ${createWatcher === watchPresentFileSystemEntry ? "Present" : "Missing"}FileSystemEntryWatcher`);
|
|
// Call the callback for current directory
|
|
callback("rename", "");
|
|
|
|
// If watcher is not closed, update it
|
|
if (watcher) {
|
|
watcher.close();
|
|
watcher = createWatcher();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Watch the file or directory that is currently present
|
|
* and when the watched file or directory is deleted, switch to missing file system entry watcher
|
|
*/
|
|
function watchPresentFileSystemEntry(): FileWatcher {
|
|
// Node 4.0 `fs.watch` function supports the "recursive" option on both OSX and Windows
|
|
// (ref: https://github.com/nodejs/node/pull/2649 and https://github.com/Microsoft/TypeScript/issues/4643)
|
|
if (options === undefined) {
|
|
if (fsSupportsRecursiveFsWatch) {
|
|
options = { persistent: true, recursive: !!recursive };
|
|
}
|
|
else {
|
|
options = { persistent: true };
|
|
}
|
|
}
|
|
try {
|
|
const presentWatcher = _fs.watch(
|
|
fileOrDirectory,
|
|
options,
|
|
isLinuxOrMacOs ?
|
|
callbackChangingToMissingFileSystemEntry :
|
|
callback
|
|
);
|
|
// Watch the missing file or directory or error
|
|
presentWatcher.on("error", () => invokeCallbackAndUpdateWatcher(watchMissingFileSystemEntry));
|
|
return presentWatcher;
|
|
}
|
|
catch (e) {
|
|
// Catch the exception and use polling instead
|
|
// Eg. on linux the number of watches are limited and one could easily exhaust watches and the exception ENOSPC is thrown when creating watcher at that point
|
|
// so instead of throwing error, use fs.watchFile
|
|
return watchPresentFileSystemEntryWithFsWatchFile();
|
|
}
|
|
}
|
|
|
|
function callbackChangingToMissingFileSystemEntry(event: "rename" | "change", relativeName: string | undefined) {
|
|
// because relativeName is not guaranteed to be correct we need to check on each rename with few combinations
|
|
// Eg on ubuntu while watching app/node_modules the relativeName is "node_modules" which is neither relative nor full path
|
|
return event === "rename" &&
|
|
(!relativeName ||
|
|
relativeName === lastDirectoryPart ||
|
|
relativeName.lastIndexOf(lastDirectoryPartWithDirectorySeparator!) === relativeName.length - lastDirectoryPartWithDirectorySeparator!.length) &&
|
|
!fileSystemEntryExists(fileOrDirectory, entryKind) ?
|
|
invokeCallbackAndUpdateWatcher(watchMissingFileSystemEntry) :
|
|
callback(event, relativeName);
|
|
}
|
|
|
|
/**
|
|
* Watch the file or directory using fs.watchFile since fs.watch threw exception
|
|
* Eg. on linux the number of watches are limited and one could easily exhaust watches and the exception ENOSPC is thrown when creating watcher at that point
|
|
*/
|
|
function watchPresentFileSystemEntryWithFsWatchFile(): FileWatcher {
|
|
sysLog(`sysLog:: ${fileOrDirectory}:: Changing to fsWatchFile`);
|
|
return watchFile(
|
|
fileOrDirectory,
|
|
createFileWatcherCallback(callback),
|
|
fallbackPollingInterval,
|
|
fallbackOptions
|
|
);
|
|
}
|
|
|
|
/**
|
|
* Watch the file or directory that is missing
|
|
* and switch to existing file or directory when the missing filesystem entry is created
|
|
*/
|
|
function watchMissingFileSystemEntry(): FileWatcher {
|
|
return watchFile(
|
|
fileOrDirectory,
|
|
(_fileName, eventKind) => {
|
|
if (eventKind === FileWatcherEventKind.Created && fileSystemEntryExists(fileOrDirectory, entryKind)) {
|
|
// Call the callback for current file or directory
|
|
// For now it could be callback for the inner directory creation,
|
|
// but just return current directory, better than current no-op
|
|
invokeCallbackAndUpdateWatcher(watchPresentFileSystemEntry);
|
|
}
|
|
},
|
|
fallbackPollingInterval,
|
|
fallbackOptions
|
|
);
|
|
}
|
|
}
|
|
|
|
function readFileWorker(fileName: string, _encoding?: string): string | undefined {
|
|
let buffer: Buffer;
|
|
try {
|
|
buffer = _fs.readFileSync(fileName);
|
|
}
|
|
catch (e) {
|
|
return undefined;
|
|
}
|
|
let len = buffer.length;
|
|
if (len >= 2 && buffer[0] === 0xFE && buffer[1] === 0xFF) {
|
|
// Big endian UTF-16 byte order mark detected. Since big endian is not supported by node.js,
|
|
// flip all byte pairs and treat as little endian.
|
|
len &= ~1; // Round down to a multiple of 2
|
|
for (let i = 0; i < len; i += 2) {
|
|
const temp = buffer[i];
|
|
buffer[i] = buffer[i + 1];
|
|
buffer[i + 1] = temp;
|
|
}
|
|
return buffer.toString("utf16le", 2);
|
|
}
|
|
if (len >= 2 && buffer[0] === 0xFF && buffer[1] === 0xFE) {
|
|
// Little endian UTF-16 byte order mark detected
|
|
return buffer.toString("utf16le", 2);
|
|
}
|
|
if (len >= 3 && buffer[0] === 0xEF && buffer[1] === 0xBB && buffer[2] === 0xBF) {
|
|
// UTF-8 byte order mark detected
|
|
return buffer.toString("utf8", 3);
|
|
}
|
|
// Default is UTF-8 with no byte order mark
|
|
return buffer.toString("utf8");
|
|
}
|
|
|
|
function readFile(fileName: string, _encoding?: string): string | undefined {
|
|
perfLogger.logStartReadFile(fileName);
|
|
const file = readFileWorker(fileName, _encoding);
|
|
perfLogger.logStopReadFile();
|
|
return file;
|
|
}
|
|
|
|
function writeFile(fileName: string, data: string, writeByteOrderMark?: boolean): void {
|
|
perfLogger.logEvent("WriteFile: " + fileName);
|
|
// If a BOM is required, emit one
|
|
if (writeByteOrderMark) {
|
|
data = byteOrderMarkIndicator + data;
|
|
}
|
|
|
|
let fd: number | undefined;
|
|
|
|
try {
|
|
fd = _fs.openSync(fileName, "w");
|
|
_fs.writeSync(fd, data, /*position*/ undefined, "utf8");
|
|
}
|
|
finally {
|
|
if (fd !== undefined) {
|
|
_fs.closeSync(fd);
|
|
}
|
|
}
|
|
}
|
|
|
|
function getAccessibleFileSystemEntries(path: string): FileSystemEntries {
|
|
perfLogger.logEvent("ReadDir: " + (path || "."));
|
|
try {
|
|
const entries = _fs.readdirSync(path || ".", { withFileTypes: true });
|
|
const files: string[] = [];
|
|
const directories: string[] = [];
|
|
for (const dirent of entries) {
|
|
// withFileTypes is not supported before Node 10.10.
|
|
const entry = typeof dirent === "string" ? dirent : dirent.name;
|
|
|
|
// This is necessary because on some file system node fails to exclude
|
|
// "." and "..". See https://github.com/nodejs/node/issues/4002
|
|
if (entry === "." || entry === "..") {
|
|
continue;
|
|
}
|
|
|
|
let stat: any;
|
|
if (typeof dirent === "string" || dirent.isSymbolicLink()) {
|
|
const name = combinePaths(path, entry);
|
|
|
|
try {
|
|
stat = _fs.statSync(name);
|
|
}
|
|
catch (e) {
|
|
continue;
|
|
}
|
|
}
|
|
else {
|
|
stat = dirent;
|
|
}
|
|
|
|
if (stat.isFile()) {
|
|
files.push(entry);
|
|
}
|
|
else if (stat.isDirectory()) {
|
|
directories.push(entry);
|
|
}
|
|
}
|
|
files.sort();
|
|
directories.sort();
|
|
return { files, directories };
|
|
}
|
|
catch (e) {
|
|
return emptyFileSystemEntries;
|
|
}
|
|
}
|
|
|
|
function readDirectory(path: string, extensions?: readonly string[], excludes?: readonly string[], includes?: readonly string[], depth?: number): string[] {
|
|
return matchFiles(path, extensions, excludes, includes, useCaseSensitiveFileNames, process.cwd(), depth, getAccessibleFileSystemEntries, realpath);
|
|
}
|
|
|
|
function fileSystemEntryExists(path: string, entryKind: FileSystemEntryKind): boolean {
|
|
try {
|
|
const stat = _fs.statSync(path);
|
|
switch (entryKind) {
|
|
case FileSystemEntryKind.File: return stat.isFile();
|
|
case FileSystemEntryKind.Directory: return stat.isDirectory();
|
|
default: return false;
|
|
}
|
|
}
|
|
catch (e) {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
function fileExists(path: string): boolean {
|
|
return fileSystemEntryExists(path, FileSystemEntryKind.File);
|
|
}
|
|
|
|
function directoryExists(path: string): boolean {
|
|
return fileSystemEntryExists(path, FileSystemEntryKind.Directory);
|
|
}
|
|
|
|
function getDirectories(path: string): string[] {
|
|
return getAccessibleFileSystemEntries(path).directories.slice();
|
|
}
|
|
|
|
function realpath(path: string): string {
|
|
try {
|
|
return _fs.realpathSync(path);
|
|
}
|
|
catch {
|
|
return path;
|
|
}
|
|
}
|
|
|
|
function getModifiedTime(path: string) {
|
|
try {
|
|
return _fs.statSync(path).mtime;
|
|
}
|
|
catch (e) {
|
|
return undefined;
|
|
}
|
|
}
|
|
|
|
function setModifiedTime(path: string, time: Date) {
|
|
try {
|
|
_fs.utimesSync(path, time, time);
|
|
}
|
|
catch (e) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
function deleteFile(path: string) {
|
|
try {
|
|
return _fs.unlinkSync(path);
|
|
}
|
|
catch (e) {
|
|
return;
|
|
}
|
|
}
|
|
|
|
function createSHA256Hash(data: string): string {
|
|
const hash = _crypto!.createHash("sha256");
|
|
hash.update(data);
|
|
return hash.digest("hex");
|
|
}
|
|
}
|
|
|
|
let sys: System | undefined;
|
|
if (typeof process !== "undefined" && process.nextTick && !process.browser && typeof require !== "undefined") {
|
|
// process and process.nextTick checks if current environment is node-like
|
|
// process.browser check excludes webpack and browserify
|
|
sys = getNodeSystem();
|
|
}
|
|
if (sys) {
|
|
// patch writefile to create folder before writing the file
|
|
patchWriteFileEnsuringDirectory(sys);
|
|
}
|
|
return sys!;
|
|
})();
|
|
|
|
if (sys && sys.getEnvironmentVariable) {
|
|
setCustomPollingValues(sys);
|
|
Debug.setAssertionLevel(/^development$/i.test(sys.getEnvironmentVariable("NODE_ENV"))
|
|
? AssertionLevel.Normal
|
|
: AssertionLevel.None);
|
|
}
|
|
if (sys && sys.debugMode) {
|
|
Debug.isDebugging = true;
|
|
}
|
|
}
|