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// @noflow
'use strict';
const fs = require('fs');
const path = require('path');
const assert = require('assert');
const babel = require('@babel/core');
const {
copyFile,
writeFile,
rmdirRecursive,
mkdirRecursive,
readdirRecursive,
parseSemver,
} = require('./utils');
if (require.main === module) {
rmdirRecursive('./dist');
mkdirRecursive('./dist');
copyFile('./LICENSE', './dist/LICENSE');
copyFile('./README.md', './dist/README.md');
const tsArtifacts = readdirRecursive('./ts-build', { ignoreDir: /^__.*__$/ });
for (const filepath of tsArtifacts) {
if (filepath.endsWith('.js')) {
buildTSEmittedJSFile(filepath);
} else if (filepath.endsWith('.d.ts')) {
const srcPath = path.join('./ts-build', filepath);
const destPath = path.join('./dist', filepath);
copyFile(srcPath, destPath);
}
}
rmdirRecursive('./ts-build');
const srcFiles = readdirRecursive('./src', { ignoreDir: /^__.*__$/ });
for (const filepath of srcFiles) {
if (filepath.endsWith('.js')) {
buildFlowFile(filepath);
} else if (filepath.endsWith('.js.flow') || filepath.endsWith('.d.ts')) {
const srcPath = path.join('./src', filepath);
const destPath = path.join('./dist', filepath);
copyFile(srcPath, destPath);
}
}
const packageJSON = buildPackageJSON();
assert(
packageJSON.version === require('../dist/version').version,
'Version in package.json and version.js should match',
);
writeFile('./dist/package.json', JSON.stringify(packageJSON, null, 2));
showStats();
}
function showStats() {
const fileTypes = {};
let totalSize = 0;
for (const filepath of readdirRecursive('./dist')) {
const name = filepath.split(path.sep).pop();
const [base, ...splitedExt] = name.split('.');
const ext = splitedExt.join('.');
const filetype = ext ? '*.' + ext : base;
fileTypes[filetype] = fileTypes[filetype] || { filepaths: [], size: 0 };
const { size } = fs.lstatSync(path.join('./dist', filepath));
totalSize += size;
fileTypes[filetype].size += size;
fileTypes[filetype].filepaths.push(filepath);
}
let stats = [];
for (const [filetype, typeStats] of Object.entries(fileTypes)) {
const numFiles = typeStats.filepaths.length;
if (numFiles > 1) {
stats.push([filetype + ' x' + numFiles, typeStats.size]);
} else {
stats.push([typeStats.filepaths[0], typeStats.size]);
}
}
stats.sort((a, b) => b[1] - a[1]);
stats = stats.map(([type, size]) => [type, (size / 1024).toFixed(2) + ' KB']);
const typeMaxLength = Math.max(...stats.map(x => x[0].length));
const sizeMaxLength = Math.max(...stats.map(x => x[1].length));
for (const [type, size] of stats) {
console.log(
type.padStart(typeMaxLength) + ' | ' + size.padStart(sizeMaxLength),
);
}
console.log('-'.repeat(typeMaxLength + 3 + sizeMaxLength));
const totalMB = (totalSize / 1024 / 1024).toFixed(2) + ' MB';
console.log(
'Total'.padStart(typeMaxLength) + ' | ' + totalMB.padStart(sizeMaxLength),
);
}
function babelBuild(srcPath, envName) {
return babel.transformFileSync(srcPath, { envName }).code + '\n';
}
function buildFlowFile(filepath) {
const srcPath = path.join('./src', filepath);
const destPath = path.join('./dist', filepath);
copyFile(srcPath, destPath + '.flow');
writeFile(destPath, babelBuild(srcPath, 'cjs'));
writeFile(destPath.replace(/\.js$/, '.mjs'), babelBuild(srcPath, 'mjs'));
}
function buildTSEmittedJSFile(filepath) {
const srcPath = path.join('./ts-build', filepath);
const destPath = path.join('./dist', filepath);
writeFile(destPath, babelBuild(srcPath, 'cjs'));
writeFile(destPath.replace(/\.js$/, '.mjs'), babelBuild(srcPath, 'mjs'));
}
function buildPackageJSON() {
const packageJSON = require('../package.json');
delete packageJSON.private;
delete packageJSON.scripts;
delete packageJSON.devDependencies;
const { preReleaseTag } = parseSemver(packageJSON.version);
if (preReleaseTag != null) {
const [tag] = preReleaseTag.split('.');
assert(tag === 'rc', 'Only "rc" tag is supported.');
assert(!packageJSON.publishConfig, 'Can not override "publishConfig".');
packageJSON.publishConfig = { tag: tag || 'latest' };
}
return packageJSON;
}