angular-cn/aio/scripts/switch-to-ivy.js

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#!/usr/bin/env node
// Imports
const {extend, parse} = require('cjson');
const {readFileSync, writeFileSync} = require('fs');
const {join, resolve} = require('path');
const {exec, set} = require('shelljs');
set('-e');
// Constants
const ROOT_DIR = resolve(__dirname, '..');
const NG_JSON = join(ROOT_DIR, 'angular.json');
const NG_COMPILER_OPTS = {
angularCompilerOptions: {
// Related Jira issue: FW-737
allowEmptyCodegenFiles: true,
enableIvy: true,
},
};
// Run
_main(process.argv.slice(2));
// Functions - Definitions
function _main() {
// Detect path to `tsconfig.app.json`.
const ngConfig = parse(readFileSync(NG_JSON, 'utf8'));
const tsConfigPath = join(ROOT_DIR, ngConfig.projects.site.architect.build.options.tsConfig);
// Enable Ivy in TS config.
console.log(`\nModifying \`${tsConfigPath}\`...`);
const oldTsConfigStr = readFileSync(tsConfigPath, 'utf8');
const oldTsConfigObj = parse(oldTsConfigStr);
const newTsConfigObj = extend(true, oldTsConfigObj, NG_COMPILER_OPTS);
const newTsConfigStr = `${JSON.stringify(newTsConfigObj, null, 2)}\n`;
console.log(`\nNew config: ${newTsConfigStr}`);
writeFileSync(tsConfigPath, newTsConfigStr);
// Run ngcc.
const ngccArgs = '--loglevel debug --properties es2015 module';
console.log(`\nRunning ngcc (with args: ${ngccArgs})...`);
exec(`yarn ivy-ngcc ${ngccArgs}`);
// Done.
console.log('\nReady to build with Ivy!');
console.log('(To switch back to ViewEngine (with packages from npm), undo the changes in ' +
`\`${tsConfigPath}\` and run \`yarn aio-use-npm && yarn example-use-npm\`.)`);
}