95 lines
4.5 KiB
TypeScript
95 lines
4.5 KiB
TypeScript
/// <reference types="node"/>
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import { normalize, relative } from "path";
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import assert = require("assert");
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import { readFileSync, writeFileSync } from "fs";
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/**
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* A minimal description for a parsed package.json object.
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*/
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interface PackageJson {
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name: string;
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version: string;
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keywords: string[];
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}
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function main(): void {
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const args = process.argv.slice(2);
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if (args.length < 3) {
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const thisProgramName = relative(process.cwd(), __filename);
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console.log("Usage:");
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console.log(`\tnode ${thisProgramName} <dev|insiders> <package.json location> <file containing version>`);
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return;
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}
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const tag = args[0];
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if (tag !== "dev" && tag !== "insiders" && tag !== "experimental") {
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throw new Error(`Unexpected tag name '${tag}'.`);
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}
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// Acquire the version from the package.json file and modify it appropriately.
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const packageJsonFilePath = normalize(args[1]);
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const packageJsonValue: PackageJson = JSON.parse(readFileSync(packageJsonFilePath).toString());
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const { majorMinor, patch } = parsePackageJsonVersion(packageJsonValue.version);
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const prereleasePatch = getPrereleasePatch(tag, patch);
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// Acquire and modify the source file that exposes the version string.
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const tsFilePath = normalize(args[2]);
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const tsFileContents = readFileSync(tsFilePath).toString();
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const modifiedTsFileContents = updateTsFile(tsFilePath, tsFileContents, majorMinor, patch, prereleasePatch);
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// Ensure we are actually changing something - the user probably wants to know that the update failed.
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if (tsFileContents === modifiedTsFileContents) {
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let err = `\n '${tsFilePath}' was not updated while configuring for a prerelease publish for '${tag}'.\n `;
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err += `Ensure that you have not already run this script; otherwise, erase your changes using 'git checkout -- "${tsFilePath}"'.`;
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throw new Error(err + "\n");
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}
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// Finally write the changes to disk.
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// Modify the package.json structure
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packageJsonValue.version = `${majorMinor}.${prereleasePatch}`;
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writeFileSync(packageJsonFilePath, JSON.stringify(packageJsonValue, /*replacer:*/ undefined, /*space:*/ 4));
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writeFileSync(tsFilePath, modifiedTsFileContents);
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}
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/* eslint-disable no-null/no-null */
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function updateTsFile(tsFilePath: string, tsFileContents: string, majorMinor: string, patch: string, nightlyPatch: string): string {
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const majorMinorRgx = /export const versionMajorMinor = "(\d+\.\d+)"/;
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const majorMinorMatch = majorMinorRgx.exec(tsFileContents);
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assert(majorMinorMatch !== null, `The file '${tsFilePath}' seems to no longer have a string matching '${majorMinorRgx}'.`);
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const parsedMajorMinor = majorMinorMatch![1];
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assert(parsedMajorMinor === majorMinor, `versionMajorMinor does not match. ${tsFilePath}: '${parsedMajorMinor}'; package.json: '${majorMinor}'`);
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const versionRgx = /export const version(?:: string)? = `\$\{versionMajorMinor\}\.(\d)(-\w+)?`;/;
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const patchMatch = versionRgx.exec(tsFileContents);
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assert(patchMatch !== null, `The file '${tsFilePath}' seems to no longer have a string matching '${versionRgx.toString()}'.`);
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const parsedPatch = patchMatch![1];
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if (parsedPatch !== patch) {
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throw new Error(`patch does not match. ${tsFilePath}: '${parsedPatch}; package.json: '${patch}'`);
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}
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return tsFileContents.replace(versionRgx, `export const version: string = \`\${versionMajorMinor}.${nightlyPatch}\`;`);
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}
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function parsePackageJsonVersion(versionString: string): { majorMinor: string, patch: string } {
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const versionRgx = /(\d+\.\d+)\.(\d+)($|\-)/;
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const match = versionString.match(versionRgx);
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assert(match !== null, "package.json 'version' should match " + versionRgx.toString());
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return { majorMinor: match![1], patch: match![2] };
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}
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/* eslint-enable no-null/no-null */
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/** e.g. 0-dev.20170707 */
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function getPrereleasePatch(tag: string, plainPatch: string): string {
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// We're going to append a representation of the current time at the end of the current version.
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// String.prototype.toISOString() returns a 24-character string formatted as 'YYYY-MM-DDTHH:mm:ss.sssZ',
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// but we'd prefer to just remove separators and limit ourselves to YYYYMMDD.
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// UTC time will always be implicit here.
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const now = new Date();
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const timeStr = now.toISOString().replace(/:|T|\.|-/g, "").slice(0, 8);
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return `${plainPatch}-${tag}.${timeStr}`;
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}
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main();
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