59 lines
2.0 KiB
TypeScript
59 lines
2.0 KiB
TypeScript
/**
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* @license
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* Copyright Google Inc. All Rights Reserved.
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*
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* Use of this source code is governed by an MIT-style license that can be
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* found in the LICENSE file at https://angular.io/license
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*/
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import {ParseSourceSpan} from '@angular/compiler';
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import * as ts from 'typescript';
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import {DEFAULT_ERROR_CODE, Diagnostic, SOURCE} from '../transformers/api';
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import {GENERATED_FILES} from '../transformers/util';
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export interface TypeCheckHost {
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parseSourceSpanOf(fileName: string, line: number, character: number): ParseSourceSpan|null;
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}
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export function translateDiagnostics(
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host: TypeCheckHost, untranslatedDiagnostics: ReadonlyArray<ts.Diagnostic>):
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{ts: ts.Diagnostic[], ng: Diagnostic[]} {
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const ts: ts.Diagnostic[] = [];
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const ng: Diagnostic[] = [];
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untranslatedDiagnostics.forEach((diagnostic) => {
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if (diagnostic.file && diagnostic.start && GENERATED_FILES.test(diagnostic.file.fileName)) {
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// We need to filter out diagnostics about unused functions as
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// they are in fact referenced by nobody and only serve to surface
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// type check errors.
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if (diagnostic.code === /* ... is declared but never used */ 6133) {
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return;
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}
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const span = sourceSpanOf(host, diagnostic.file, diagnostic.start);
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if (span) {
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const fileName = span.start.file.url;
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ng.push({
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messageText: diagnosticMessageToString(diagnostic.messageText),
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category: diagnostic.category, span,
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source: SOURCE,
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code: DEFAULT_ERROR_CODE
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});
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}
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} else {
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ts.push(diagnostic);
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}
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});
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return {ts, ng};
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}
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function sourceSpanOf(host: TypeCheckHost, source: ts.SourceFile, start: number): ParseSourceSpan|
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null {
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const {line, character} = ts.getLineAndCharacterOfPosition(source, start);
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return host.parseSourceSpanOf(source.fileName, line, character);
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}
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function diagnosticMessageToString(message: ts.DiagnosticMessageChain | string): string {
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return ts.flattenDiagnosticMessageText(message, '\n');
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}
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