angular-cn/scripts/package-builder.js

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'use strict';
// Build the dist/packages-dist directory in the same fashion as the legacy
// /build.sh script, by building the npm packages with Bazel and copying files.
// This is needed for scripts and tests which are not updated to the Bazel output
// layout (which always matches the input layout).
// Do not add new dependencies on this script, instead adapt scripts to use the
// new layout, and write new tests as Bazel targets.
//
// Ideally integration tests should run under bazel, and just consume the npm
// packages via `deps`. Until that works, we manually build the npm packages and then
// copy the results to the appropriate `dist` location.
const {execSync} = require('child_process');
const {resolve, relative} = require('path');
const {chmod, cp, mkdir, rm, set, test} = require('shelljs');
set('-e');
/** @type {string} The absolute path to the project root directory. */
const baseDir = resolve(`${__dirname}/..`);
/** @type {string} The command to use for running bazel. */
const bazelCmd = 'yarn --silent bazel';
/** @type {string} The absolute path to the bazel-bin directory. */
const bazelBin = exec(`${bazelCmd} info bazel-bin`, true);
/**
* @type {string}
* The relative path to the entry script (i.e. the one loaded when the Node.js process launched).
* It is relative to `baseDir`.
*/
const scriptPath = relative(baseDir, require.main.filename);
module.exports = {
baseDir,
bazelBin,
bazelCmd,
buildTargetPackages,
exec,
scriptPath,
};
/**
* Build the packages.
*
* @param {string} destPath Path to the output directory into which we copy the npm packages.
* @param {'legacy' | 'aot'} compileMode Either `legacy` (view engine) or `aot` (ivy).
* @param {string} description Human-readable description of the build.
*/
function buildTargetPackages(destPath, compileMode, description) {
console.log('##################################');
console.log(`${scriptPath}:`);
console.log(' Building @angular/* npm packages');
console.log(` Mode: ${description}`);
console.log('##################################');
// List of targets to build, e.g. core, common, compiler, etc. Note that we want to also remove
// all carriage return (`\r`) characters form the query output, because otherwise the carriage
// return is part of the bazel target name and bazel will complain.
const getTargetsCmd = `${bazelCmd} query --output=label "attr('tags', '\\[.*release-with-framework.*\\]', //packages/...) intersect kind('.*_package', //packages/...)"`;
const targets = exec(getTargetsCmd, true).split(/\r?\n/);
// Use `--config=release` so that snapshot builds get published with embedded version info.
exec(`${bazelCmd} build --config=release --define=compile=${compileMode} ${targets.join(' ')}`);
// Create the output directory.
const absDestPath = `${baseDir}/${destPath}`;
if (!test('-d', absDestPath)) mkdir('-p', absDestPath);
targets.forEach(target => {
const pkg = target.replace(/\/\/packages\/(.*):npm_package/, '$1');
// Skip any that don't have an "npm_package" target.
const srcDir = `${bazelBin}/packages/${pkg}/npm_package`;
const destDir = `${absDestPath}/${pkg}`;
if (test('-d', srcDir)) {
console.log(`# Copy artifacts to ${destDir}`);
rm('-rf', destDir);
cp('-R', srcDir, destDir);
chmod('-R', 'u+w', destDir);
}
});
}
/**
* Execute a command synchronously.
*
* By default, the current process' stdout is used (and thus the output is not captured and returned
* to the caller). This is necessary for showing colors and modifying already printed output, for
* example to show progress.
*
* If the caller requests the output (via `captureStdout: true`), the command is run without
* printing anything to stdout and then (once the command has completed) the whole output is printed
* to stdout and returned to the caller.
*
* @param {string} cmd The command to run.
* @param {boolean} [captureStdout=false] Whether to return the output of the command.
* @return {string | undefined} The captured stdout output if `captureStdout: true` or `undefined`.
*/
function exec(cmd, captureStdout) {
const output = execSync(cmd, {
stdio: [
/* stdin */ 'inherit',
/* stdout */ captureStdout ? 'pipe' : 'inherit',
/* stderr */ 'inherit',
],
});
if (captureStdout) {
process.stdout.write(output);
return output.toString().trim();
}
}