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Handle noEmit and noEmitOnError with SemanticDiagnosticsBuilder (#40880)
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* Add test that fails

* Handle noEmit on semantic builder's emit as well

* Add test for tsbuildinfo text verification

* Fix noEmit handling for tsbuildinfo emit with SemanticDiagnosticBuilder

* Add test for noEmitOnError with SemanticDiagnosticsBuilder

* Fix tsbuildinfo emit with SemanticDiagnosticsBuilder on noEmitOnError

* Update src/compiler/builder.ts

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>

* Update src/compiler/builder.ts

Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
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@sheetalkamat @sandersn
sheetalkamat and sandersn committed Oct 10, 2020
1 parent a109b5d commit a4b9bba
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Showing 4 changed files with 174 additions and 23 deletions.
73 changes: 50 additions & 23 deletions src/compiler/builder.ts
View file
Expand Up @@ -1019,31 +1019,57 @@ namespace ts {
* in that order would be used to write the files
*/
function emit(targetSourceFile?: SourceFile, writeFile?: WriteFileCallback, cancellationToken?: CancellationToken, emitOnlyDtsFiles?: boolean, customTransformers?: CustomTransformers): EmitResult {
let restorePendingEmitOnHandlingNoEmitSuccess = false;
let savedAffectedFilesPendingEmit;
let savedAffectedFilesPendingEmitKind;
let savedAffectedFilesPendingEmitIndex;
// Backup and restore affected pendings emit state for non emit Builder if noEmitOnError is enabled and emitBuildInfo could be written in case there are errors
// This ensures pending files to emit is updated in tsbuildinfo
// Note that when there are no errors, emit proceeds as if everything is emitted as it is callers reponsibility to write the files to disk if at all (because its builder that doesnt track files to emit)
if (kind !== BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram &&
!targetSourceFile &&
!outFile(state.compilerOptions) &&
!state.compilerOptions.noEmit &&
state.compilerOptions.noEmitOnError) {
restorePendingEmitOnHandlingNoEmitSuccess = true;
savedAffectedFilesPendingEmit = state.affectedFilesPendingEmit && state.affectedFilesPendingEmit.slice();
savedAffectedFilesPendingEmitKind = state.affectedFilesPendingEmitKind && new Map(state.affectedFilesPendingEmitKind);
savedAffectedFilesPendingEmitIndex = state.affectedFilesPendingEmitIndex;
}

if (kind === BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram) {
assertSourceFileOkWithoutNextAffectedCall(state, targetSourceFile);
const result = handleNoEmitOptions(builderProgram, targetSourceFile, writeFile, cancellationToken);
if (result) return result;
if (!targetSourceFile) {
// Emit and report any errors we ran into.
let sourceMaps: SourceMapEmitResult[] = [];
let emitSkipped = false;
let diagnostics: Diagnostic[] | undefined;
let emittedFiles: string[] = [];

let affectedEmitResult: AffectedFileResult<EmitResult>;
while (affectedEmitResult = emitNextAffectedFile(writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers)) {
emitSkipped = emitSkipped || affectedEmitResult.result.emitSkipped;
diagnostics = addRange(diagnostics, affectedEmitResult.result.diagnostics);
emittedFiles = addRange(emittedFiles, affectedEmitResult.result.emittedFiles);
sourceMaps = addRange(sourceMaps, affectedEmitResult.result.sourceMaps);
}
return {
emitSkipped,
diagnostics: diagnostics || emptyArray,
emittedFiles,
sourceMaps
};
}
const result = handleNoEmitOptions(builderProgram, targetSourceFile, writeFile, cancellationToken);
if (result) return result;

if (restorePendingEmitOnHandlingNoEmitSuccess) {
state.affectedFilesPendingEmit = savedAffectedFilesPendingEmit;
state.affectedFilesPendingEmitKind = savedAffectedFilesPendingEmitKind;
state.affectedFilesPendingEmitIndex = savedAffectedFilesPendingEmitIndex;
}

// Emit only affected files if using builder for emit
if (!targetSourceFile && kind === BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram) {
// Emit and report any errors we ran into.
let sourceMaps: SourceMapEmitResult[] = [];
let emitSkipped = false;
let diagnostics: Diagnostic[] | undefined;
let emittedFiles: string[] = [];

let affectedEmitResult: AffectedFileResult<EmitResult>;
while (affectedEmitResult = emitNextAffectedFile(writeFile, cancellationToken, emitOnlyDtsFiles, customTransformers)) {
emitSkipped = emitSkipped || affectedEmitResult.result.emitSkipped;
diagnostics = addRange(diagnostics, affectedEmitResult.result.diagnostics);
emittedFiles = addRange(emittedFiles, affectedEmitResult.result.emittedFiles);
sourceMaps = addRange(sourceMaps, affectedEmitResult.result.sourceMaps);
}
return {
emitSkipped,
diagnostics: diagnostics || emptyArray,
emittedFiles,
sourceMaps
};
}
return Debug.checkDefined(state.program).emit(targetSourceFile, writeFile || maybeBind(host, host.writeFile), cancellationToken, emitOnlyDtsFiles, customTransformers);
}
Expand All @@ -1069,7 +1095,8 @@ namespace ts {
}

// Add file to affected file pending emit to handle for later emit time
if (kind === BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram) {
// Apart for emit builder do this for tsbuildinfo, do this for non emit builder when noEmit is set as tsbuildinfo is written and reused between emitters
if (kind === BuilderProgramKind.EmitAndSemanticDiagnosticsBuilderProgram || state.compilerOptions.noEmit || state.compilerOptions.noEmitOnError) {
addToAffectedFilesPendingEmit(state, (affected as SourceFile).resolvedPath, BuilderFileEmit.Full);
}

Expand Down
7 changes: 7 additions & 0 deletions src/compiler/program.ts
View file
Expand Up @@ -937,6 +937,7 @@ namespace ts {
getOptionsDiagnostics,
getGlobalDiagnostics,
getSemanticDiagnostics,
getCachedSemanticDiagnostics,
getSuggestionDiagnostics,
getDeclarationDiagnostics,
getBindAndCheckDiagnostics,
Expand Down Expand Up @@ -1693,6 +1694,12 @@ namespace ts {
return getDiagnosticsHelper(sourceFile, getSemanticDiagnosticsForFile, cancellationToken);
}

function getCachedSemanticDiagnostics(sourceFile?: SourceFile): readonly Diagnostic[] | undefined {
return sourceFile
? cachedBindAndCheckDiagnosticsForFile.perFile?.get(sourceFile.path)
: cachedBindAndCheckDiagnosticsForFile.allDiagnostics;
}

function getBindAndCheckDiagnostics(sourceFile: SourceFile, cancellationToken?: CancellationToken): readonly Diagnostic[] {
return getBindAndCheckDiagnosticsForFile(sourceFile, cancellationToken);
}
Expand Down
2 changes: 2 additions & 0 deletions src/compiler/types.ts
View file
Expand Up @@ -3762,6 +3762,8 @@ namespace ts {
/* @internal */ getDiagnosticsProducingTypeChecker(): TypeChecker;
/* @internal */ dropDiagnosticsProducingTypeChecker(): void;

/* @internal */ getCachedSemanticDiagnostics(sourceFile?: SourceFile): readonly Diagnostic[] | undefined;

/* @internal */ getClassifiableNames(): Set<__String>;

getTypeCatalog(): readonly Type[];
Expand Down
115 changes: 115 additions & 0 deletions src/testRunner/unittests/tscWatch/watchApi.ts
View file
Expand Up @@ -128,4 +128,119 @@ namespace ts.tscWatch {
checkProgramActualFiles(watch.getProgram().getProgram(), [mainFile.path, otherFile.path, libFile.path, other2]);
});
});

describe("unittests:: tsc-watch:: watchAPI:: when watchHost uses createSemanticDiagnosticsBuilderProgram", () => {
function getWatch<T extends BuilderProgram>(config: File, optionsToExtend: CompilerOptions | undefined, sys: System, createProgram: CreateProgram<T>) {
const watchCompilerHost = createWatchCompilerHost(config.path, optionsToExtend, sys, createProgram);
return createWatchProgram(watchCompilerHost);
}

function setup<T extends BuilderProgram>(createProgram: CreateProgram<T>, configText: string) {
const config: File = {
path: `${projectRoot}/tsconfig.json`,
content: configText
};
const mainFile: File = {
path: `${projectRoot}/main.ts`,
content: "export const x = 10;"
};
const otherFile: File = {
path: `${projectRoot}/other.ts`,
content: "export const y = 10;"
};
const sys = createWatchedSystem([config, mainFile, otherFile, libFile]);
const watch = getWatch(config, { noEmit: true }, sys, createProgram);
return { sys, watch, mainFile, otherFile, config };
}

function verifyOutputs(sys: System, emitSys: System) {
for (const output of [`${projectRoot}/main.js`, `${projectRoot}/main.d.ts`, `${projectRoot}/other.js`, `${projectRoot}/other.d.ts`, `${projectRoot}/tsconfig.tsbuildinfo`]) {
assert.strictEqual(sys.readFile(output), emitSys.readFile(output), `Output file text for ${output}`);
}
}

function verifyBuilder<T extends BuilderProgram, U extends BuilderProgram>(config: File, sys: System, emitSys: System, createProgram: CreateProgram<T>, createEmitProgram: CreateProgram<U>, optionsToExtend?: CompilerOptions) {
const watch = getWatch(config, /*optionsToExtend*/ optionsToExtend, sys, createProgram);
const emitWatch = getWatch(config, /*optionsToExtend*/ optionsToExtend, emitSys, createEmitProgram);
verifyOutputs(sys, emitSys);
watch.close();
emitWatch.close();
}

it("verifies that noEmit is handled on createSemanticDiagnosticsBuilderProgram and typechecking happens only on affected files", () => {
const { sys, watch, mainFile, otherFile } = setup(createSemanticDiagnosticsBuilderProgram, "{}");
checkProgramActualFiles(watch.getProgram().getProgram(), [mainFile.path, otherFile.path, libFile.path]);
sys.appendFile(mainFile.path, "\n// SomeComment");
sys.runQueuedTimeoutCallbacks();
const program = watch.getProgram().getProgram();
assert.deepEqual(program.getCachedSemanticDiagnostics(program.getSourceFile(mainFile.path)), []);
// Should not retrieve diagnostics for other file thats not changed
assert.deepEqual(program.getCachedSemanticDiagnostics(program.getSourceFile(otherFile.path)), /*expected*/ undefined);
});

it("noEmit with composite writes the tsbuildinfo with pending affected files correctly", () => {
const configText = JSON.stringify({ compilerOptions: { composite: true } });
const { sys, watch, config, mainFile } = setup(createSemanticDiagnosticsBuilderProgram, configText);
const { sys: emitSys, watch: emitWatch } = setup(createEmitAndSemanticDiagnosticsBuilderProgram, configText);
verifyOutputs(sys, emitSys);

watch.close();
emitWatch.close();

// Emit on both sys should result in same output
verifyBuilder(config, sys, emitSys, createEmitAndSemanticDiagnosticsBuilderProgram, createEmitAndSemanticDiagnosticsBuilderProgram);

// Change file
sys.appendFile(mainFile.path, "\n// SomeComment");
emitSys.appendFile(mainFile.path, "\n// SomeComment");

// Verify noEmit results in same output
verifyBuilder(config, sys, emitSys, createSemanticDiagnosticsBuilderProgram, createEmitAndSemanticDiagnosticsBuilderProgram, { noEmit: true });

// Emit on both sys should result in same output
verifyBuilder(config, sys, emitSys, createEmitAndSemanticDiagnosticsBuilderProgram, createEmitAndSemanticDiagnosticsBuilderProgram);

// Change file
sys.appendFile(mainFile.path, "\n// SomeComment");
emitSys.appendFile(mainFile.path, "\n// SomeComment");

// Emit on both the builders should result in same files
verifyBuilder(config, sys, emitSys, createSemanticDiagnosticsBuilderProgram, createEmitAndSemanticDiagnosticsBuilderProgram);
});

it("noEmitOnError with composite writes the tsbuildinfo with pending affected files correctly", () => {
const config: File = {
path: `${projectRoot}/tsconfig.json`,
content: JSON.stringify({ compilerOptions: { composite: true } })
};
const mainFile: File = {
path: `${projectRoot}/main.ts`,
content: "export const x: string = 10;"
};
const otherFile: File = {
path: `${projectRoot}/other.ts`,
content: "export const y = 10;"
};
const sys = createWatchedSystem([config, mainFile, otherFile, libFile]);
const emitSys = createWatchedSystem([config, mainFile, otherFile, libFile]);

// Verify noEmit results in same output
verifyBuilder(config, sys, emitSys, createSemanticDiagnosticsBuilderProgram, createEmitAndSemanticDiagnosticsBuilderProgram, { noEmitOnError: true });

// Change file
sys.appendFile(mainFile.path, "\n// SomeComment");
emitSys.appendFile(mainFile.path, "\n// SomeComment");

// Verify noEmit results in same output
verifyBuilder(config, sys, emitSys, createSemanticDiagnosticsBuilderProgram, createEmitAndSemanticDiagnosticsBuilderProgram, { noEmitOnError: true });

// Fix error
const fixed = "export const x = 10;";
sys.appendFile(mainFile.path, fixed);
emitSys.appendFile(mainFile.path, fixed);

// Emit on both the builders should result in same files
verifyBuilder(config, sys, emitSys, createSemanticDiagnosticsBuilderProgram, createEmitAndSemanticDiagnosticsBuilderProgram, { noEmitOnError: true });
});
});
}

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