angular-docs-cn/tools/ts-api-guardian/lib/main.ts

46 lines
1.3 KiB
TypeScript
Raw Normal View History

/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {createPatch} from 'diff';
import * as fs from 'fs';
import * as path from 'path';
import {SerializationOptions, publicApi} from './serializer';
export {SerializationOptions, publicApi} from './serializer';
export function generateGoldenFile(
entrypoint: string, outFile: string, options: SerializationOptions = {}): void {
const output = publicApi(entrypoint, options);
ensureDirectory(path.dirname(outFile));
fs.writeFileSync(outFile, output);
}
export function verifyAgainstGoldenFile(
entrypoint: string, goldenFile: string, options: SerializationOptions = {}): string {
const actual = publicApi(entrypoint, options);
const expected = fs.readFileSync(goldenFile).toString();
if (actual === expected) {
return '';
} else {
const patch = createPatch(goldenFile, expected, actual, 'Golden file', 'Generated API');
// Remove the header of the patch
const start = patch.indexOf('\n', patch.indexOf('\n') + 1) + 1;
return patch.substring(start);
}
}
function ensureDirectory(dir: string) {
if (!fs.existsSync(dir)) {
ensureDirectory(path.dirname(dir));
fs.mkdirSync(dir);
}
}