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Consolidate watch checks in one place

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This commit is contained in:
Mohamed Hegazy 2016-02-23 11:10:56 -08:00
parent 555edcddb5
commit 54ae2709d3
1 changed files with 8 additions and 6 deletions
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14
src/compiler/tsc.ts
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@ -239,6 +239,11 @@ namespace ts {
function isJSONSupported() {
return typeof JSON === "object" && typeof JSON.parse === "function";
}
function isWatchSet(options: CompilerOptions) {
// Firefox has Object.prototype.watch
return options.watch && options.hasOwnProperty("watch");
}
export function executeCommandLine(args: string[]): void {
const commandLine = parseCommandLine(args);
@ -327,8 +332,7 @@ namespace ts {
return sys.exit(ExitStatus.Success);
}
// Firefox has Object.prototype.watch
if (commandLine.options.watch && commandLine.options.hasOwnProperty("watch")) {
if (isWatchSet(commandLine.options)) {
if (!sys.watchFile) {
reportDiagnostic(createCompilerDiagnostic(Diagnostics.The_current_host_does_not_support_the_0_option, "--watch"), /* compilerHost */ undefined);
return sys.exit(ExitStatus.DiagnosticsPresent_OutputsSkipped);
@ -415,8 +419,7 @@ namespace ts {
const compileResult = compile(rootFileNames, compilerOptions, compilerHost);
// Firefox has Object.prototype.watch
if (!compilerOptions.watch || !compilerOptions.hasOwnProperty("watch")) {
if (!isWatchSet(compilerOptions)) {
return sys.exit(compileResult.exitStatus);
}
@ -442,8 +445,7 @@ namespace ts {
}
// Use default host function
const sourceFile = hostGetSourceFile(fileName, languageVersion, onError);
// Firefox has Object.prototype.watch
if (sourceFile && compilerOptions.watch && compilerOptions.hasOwnProperty("watch")) {
if (sourceFile && isWatchSet(compilerOptions)) {
// Attach a file watcher
const filePath = toPath(sourceFile.fileName, sys.getCurrentDirectory(), createGetCanonicalFileName(sys.useCaseSensitiveFileNames));
sourceFile.fileWatcher = sys.watchFile(filePath, (fileName: string, removed?: boolean) => sourceFileChanged(sourceFile, removed));