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perf(language-service): keep analyzedModules cache when source files don't change (#32562)

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This change will improve performance of language service when working in external templates.

PR Close #32562
This commit is contained in:
Andrius
2019-09-09 20:51:31 +03:00
committed by Matias Niemelä
parent 53dbff66d7
commit 4f033235b1
2 changed files with 13 additions and 1 deletions
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4
packages/language-service/src/typescript_host.ts
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@ -275,12 +275,14 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
// Invalidate file that have changed in the static symbol resolver
const seen = new Set<string>();
let hasChanges = false;
for (const sourceFile of program.getSourceFiles()) {
const fileName = sourceFile.fileName;
seen.add(fileName);
const version = this.tsLsHost.getScriptVersion(fileName);
const lastVersion = this.fileVersions.get(fileName);
if (version !== lastVersion) {
hasChanges = true;
this.fileVersions.set(fileName, version);
this.staticSymbolResolver.invalidateFile(fileName);
}
@ -295,7 +297,7 @@ export class TypeScriptServiceHost implements LanguageServiceHost {
this.lastProgram = program;
return false;
return missing.length === 0 && !hasChanges;
}
/**