angular-cn/tools/size-tracking/index.ts

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/**
* @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 {readFileSync, writeFileSync} from 'fs';
import {SizeTracker} from './size_tracker';
import chalk from 'chalk';
import {compareFileSizeData} from './file_size_compare';
import {FileSizeData} from './file_size_data';
if (require.main === module) {
const
[filePath, sourceMapPath, goldenPath, maxPercentageDiffArg, maxSizeDiffArg, writeGoldenArg] =
process.argv.slice(2);
const status = main(
require.resolve(filePath), require.resolve(sourceMapPath), require.resolve(goldenPath),
writeGoldenArg === 'true', parseInt(maxPercentageDiffArg), parseInt(maxSizeDiffArg));
process.exit(status ? 0 : 1);
}
export function main(
filePath: string, sourceMapPath: string, goldenSizeMapPath: string, writeGolden: boolean,
maxPercentageDiff: number, maxByteDiff: number): boolean {
const {sizeResult} = new SizeTracker(filePath, sourceMapPath);
if (writeGolden) {
writeFileSync(goldenSizeMapPath, JSON.stringify(sizeResult, null, 2));
console.error(chalk.green(`Updated golden size data in ${goldenSizeMapPath}`));
return;
}
const expectedSizeData = <FileSizeData>JSON.parse(readFileSync(goldenSizeMapPath, 'utf8'));
const differences =
compareFileSizeData(sizeResult, expectedSizeData, {maxByteDiff, maxPercentageDiff});
if (!differences.length) {
return true;
}
console.error(
`Computed file size data does not match golden size data. ` +
`The following differences were found:\n`);
differences.forEach(({filePath, message}) => {
const failurePrefix = filePath ? `"${filePath}": ` : '';
console.error(chalk.red(` ${failurePrefix}${message}`));
});
const compile = process.env['compile'];
const defineFlag = (compile !== 'legacy') ? `--define=compile=${compile} ` : '';
const bazelTargetName = process.env['TEST_TARGET'];
console.error(`\nThe golden file can be updated with the following command:`);
console.error(` yarn bazel run ${defineFlag}${bazelTargetName}.accept`);
}