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cache per-folder module resolutions during construction of the program (#13030)

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This commit is contained in:
Vladimir Matveev
2016-12-19 13:48:45 -08:00
committed by GitHub
parent c05b73328c
commit 0649c2272c
10 changed files with 175 additions and 23 deletions
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7
src/compiler/program.ts
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@@ -325,6 +325,7 @@ namespace ts {
// Map storing if there is emit blocking diagnostics for given input
const hasEmitBlockingDiagnostics = createFileMap<boolean>(getCanonicalFileName);
let moduleResolutionCache: ModuleResolutionCache;
let resolveModuleNamesWorker: (moduleNames: string[], containingFile: string) => ResolvedModuleFull[];
if (host.resolveModuleNames) {
resolveModuleNamesWorker = (moduleNames, containingFile) => host.resolveModuleNames(moduleNames, containingFile).map(resolved => {
@@ -338,7 +339,8 @@ namespace ts {
});
}
else {
const loader = (moduleName: string, containingFile: string) => resolveModuleName(moduleName, containingFile, options, host).resolvedModule;
moduleResolutionCache = createModuleResolutionCache(currentDirectory, x => host.getCanonicalFileName(x));
const loader = (moduleName: string, containingFile: string) => resolveModuleName(moduleName, containingFile, options, host, moduleResolutionCache).resolvedModule;
resolveModuleNamesWorker = (moduleNames, containingFile) => loadWithLocalCache(moduleNames, containingFile, loader);
}
@@ -391,6 +393,9 @@ namespace ts {
}
}
// unconditionally set moduleResolutionCache to undefined to avoid unnecessary leaks
moduleResolutionCache = undefined;
// unconditionally set oldProgram to undefined to prevent it from being captured in closure
oldProgram = undefined;