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Merge pull request #27714 from Microsoft/okToSkipJsonOverrite

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Skip writing json file if it is going to overwrite same location
This commit is contained in:
Sheetal Nandi
2018-10-11 15:48:28 -07:00
committed by GitHub
parent d19fb98ec6 2787a2793a
commit 9cda8d61fa
2 changed files with 3 additions and 21 deletions
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4
src/compiler/emitter.ts
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@@ -52,7 +52,9 @@ namespace ts {
else {
const ownOutputFilePath = getOwnEmitOutputFilePath(sourceFile.fileName, host, getOutputExtension(sourceFile, options));
// If json file emits to the same location skip writing it, if emitDeclarationOnly skip writing it
const jsFilePath = options.emitDeclarationOnly ? undefined : ownOutputFilePath;
const isJsonEmittedToSameLocation = isJsonSourceFile(sourceFile) &&
comparePaths(sourceFile.fileName, ownOutputFilePath, host.getCurrentDirectory(), !host.useCaseSensitiveFileNames()) === Comparison.EqualTo;
const jsFilePath = options.emitDeclarationOnly || isJsonEmittedToSameLocation ? undefined : ownOutputFilePath;
const sourceMapFilePath = !jsFilePath || isJsonSourceFile(sourceFile) ? undefined : getSourceMapFilePath(jsFilePath, options);
// For legacy reasons (ie, we have baselines capturing the behavior), js files don't report a .d.ts output path - this would only matter if `declaration` and `allowJs` were both on, which is currently an error
const isJs = isSourceFileJS(sourceFile);