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Use stored helpers to emit incrementally

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This commit is contained in:
Sheetal Nandi 2019-02-01 17:15:17 -08:00
parent aa5d62a72c
commit acec3c193a
1 changed files with 7 additions and 3 deletions
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10
src/compiler/factory.ts
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@ -2656,7 +2656,7 @@ namespace ts {
export function createUnparsedSourceFile(text: string): UnparsedSource;
export function createUnparsedSourceFile(inputFile: InputFiles, type: "js" | "dts"): UnparsedSource;
export function createUnparsedSourceFile(text: string, mapPath: string | undefined, map: string | undefined): UnparsedSource;
export function createUnparsedSourceFile(textOrInputFiles: string | InputFiles, mapPathOrType?: string, map?: string): UnparsedSource {
export function createUnparsedSourceFile(textOrInputFiles: string | InputFiles, mapPathOrType?: string, mapText?: string): UnparsedSource {
const node = <UnparsedSource>createNode(SyntaxKind.UnparsedSource);
let prologues: UnparsedPrologue[] | undefined;
let helpers: UnscopedEmitHelpers[] | undefined;
@ -2677,7 +2677,7 @@ namespace ts {
if (textOrInputFiles.buildInfo) {
const sections = mapPathOrType === "js" ? textOrInputFiles.buildInfo.js : textOrInputFiles.buildInfo.dts;
for (const section of sections) {
if (textOrInputFiles.oldFileOfCurrentEmit && section.kind !== BundleFileSectionKind.Text) continue;
if (node.oldFileOfCurrentEmit && section.kind !== BundleFileSectionKind.Text) continue;
switch (section.kind) {
case BundleFileSectionKind.Prologue:
(prologues || (prologues = [])).push(createUnparsedNode(section, node) as UnparsedPrologue);
@ -2706,13 +2706,17 @@ namespace ts {
Debug.assertNever(section);
}
}
if (node.oldFileOfCurrentEmit) {
Debug.assert(helpers === undefined);
helpers = map(textOrInputFiles.buildInfo.sources.helpers, name => getAllUnscopedEmitHelpers().get(name)!);
}
}
}
else {
node.fileName = "";
node.text = textOrInputFiles;
node.sourceMapPath = mapPathOrType;
node.sourceMapText = map;
node.sourceMapText = mapText;
}
node.prologues = prologues || emptyArray;
node.helpers = helpers;