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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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68
src/compiler/moduleNameResolver.ts
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@@ -293,33 +293,69 @@ namespace ts {
return result;
}
export function resolveModuleName(moduleName: string, containingFile: string, compilerOptions: CompilerOptions, host: ModuleResolutionHost): ResolvedModuleWithFailedLookupLocations {
/**
* Cached module resolutions per containing directory.
* This assumes that any module id will have the same resolution for sibling files located in the same folder.
*/
export interface ModuleResolutionCache {
getOrCreateCacheForDirectory(directoryName: string): Map<ResolvedModuleWithFailedLookupLocations>;
}
export function createModuleResolutionCache(currentDirectory: string, getCanonicalFileName: (s: string) => string) {
const map = createFileMap<Map<ResolvedModuleWithFailedLookupLocations>>();
return { getOrCreateCacheForDirectory };
function getOrCreateCacheForDirectory(directoryName: string) {
const path = toPath(directoryName, currentDirectory, getCanonicalFileName);
let perFolderCache = map.get(path);
if (!perFolderCache) {
perFolderCache = createMap<ResolvedModuleWithFailedLookupLocations>();
map.set(path, perFolderCache);
}
return perFolderCache;
}
}
export function resolveModuleName(moduleName: string, containingFile: string, compilerOptions: CompilerOptions, host: ModuleResolutionHost, cache?: ModuleResolutionCache): ResolvedModuleWithFailedLookupLocations {
const traceEnabled = isTraceEnabled(compilerOptions, host);
if (traceEnabled) {
trace(host, Diagnostics.Resolving_module_0_from_1, moduleName, containingFile);
}
let perFolderCache = cache && cache.getOrCreateCacheForDirectory(getDirectoryPath(containingFile));
let result = perFolderCache && perFolderCache[moduleName];
let moduleResolution = compilerOptions.moduleResolution;
if (moduleResolution === undefined) {
moduleResolution = getEmitModuleKind(compilerOptions) === ModuleKind.CommonJS ? ModuleResolutionKind.NodeJs : ModuleResolutionKind.Classic;
if (result) {
if (traceEnabled) {
trace(host, Diagnostics.Module_resolution_kind_is_not_specified_using_0, ModuleResolutionKind[moduleResolution]);
trace(host, Diagnostics.Resolution_for_module_0_was_found_in_cache, moduleName);
}
}
else {
if (traceEnabled) {
trace(host, Diagnostics.Explicitly_specified_module_resolution_kind_Colon_0, ModuleResolutionKind[moduleResolution]);
let moduleResolution = compilerOptions.moduleResolution;
if (moduleResolution === undefined) {
moduleResolution = getEmitModuleKind(compilerOptions) === ModuleKind.CommonJS ? ModuleResolutionKind.NodeJs : ModuleResolutionKind.Classic;
if (traceEnabled) {
trace(host, Diagnostics.Module_resolution_kind_is_not_specified_using_0, ModuleResolutionKind[moduleResolution]);
}
}
else {
if (traceEnabled) {
trace(host, Diagnostics.Explicitly_specified_module_resolution_kind_Colon_0, ModuleResolutionKind[moduleResolution]);
}
}
}
let result: ResolvedModuleWithFailedLookupLocations;
switch (moduleResolution) {
case ModuleResolutionKind.NodeJs:
result = nodeModuleNameResolver(moduleName, containingFile, compilerOptions, host);
break;
case ModuleResolutionKind.Classic:
result = classicNameResolver(moduleName, containingFile, compilerOptions, host);
break;
switch (moduleResolution) {
case ModuleResolutionKind.NodeJs:
result = nodeModuleNameResolver(moduleName, containingFile, compilerOptions, host);
break;
case ModuleResolutionKind.Classic:
result = classicNameResolver(moduleName, containingFile, compilerOptions, host);
break;
}
if (perFolderCache) {
perFolderCache[moduleName] = result;
}
}
if (traceEnabled) {