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fix(language-service): improve performance of updateModuleAnalysis() (#15543)

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This commit is contained in:
Chuck Jazdzewski
2017-03-28 13:32:46 -07:00
committed by Victor Berchet
parent d438b88f19
commit 6269d28bb0
3 changed files with 61 additions and 13 deletions
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29
packages/compiler-cli/src/compiler_host.ts
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@ -33,6 +33,7 @@ export class CompilerHost implements AotCompilerHost {
private resolverCache = new Map<string, ModuleMetadata[]>();
private bundleIndexCache = new Map<string, boolean>();
private bundleIndexNames = new Set<string>();
private moduleFileNames = new Map<string, string>();
protected resolveModuleNameHost: CompilerHostContext;
constructor(
@ -69,19 +70,25 @@ export class CompilerHost implements AotCompilerHost {
getCanonicalFileName(fileName: string): string { return fileName; }
moduleNameToFileName(m: string, containingFile: string): string|null {
if (!containingFile || !containingFile.length) {
if (m.indexOf('.') === 0) {
throw new Error('Resolution of relative paths requires a containing file.');
const key = m + ':' + (containingFile || '');
let result = this.moduleFileNames.get(key);
if (!result) {
if (!containingFile || !containingFile.length) {
if (m.indexOf('.') === 0) {
throw new Error('Resolution of relative paths requires a containing file.');
}
// Any containing file gives the same result for absolute imports
containingFile = this.getCanonicalFileName(path.join(this.basePath, 'index.ts'));
}
// Any containing file gives the same result for absolute imports
containingFile = this.getCanonicalFileName(path.join(this.basePath, 'index.ts'));
m = m.replace(EXT, '');
const resolved =
ts.resolveModuleName(
m, containingFile.replace(/\\/g, '/'), this.options, this.resolveModuleNameHost)
.resolvedModule;
result = resolved ? this.getCanonicalFileName(resolved.resolvedFileName) : null;
this.moduleFileNames.set(key, result);
}
m = m.replace(EXT, '');
const resolved =
ts.resolveModuleName(
m, containingFile.replace(/\\/g, '/'), this.options, this.resolveModuleNameHost)
.resolvedModule;
return resolved ? this.getCanonicalFileName(resolved.resolvedFileName) : null;
return result;
};
/**