react/scripts/print-warnings/print-warnings.js
2017-04-05 18:54:48 +01:00

78 lines
2.2 KiB
JavaScript

/**
* Copyright (c) 2013-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under the BSD-style license found in the
* LICENSE file in the root directory of this source tree. An additional grant
* of patent rights can be found in the PATENTS file in the same directory.
*/
'use strict';
const babylon = require('babylon');
const fs = require('fs');
const through = require('through2');
const traverse = require('babel-traverse').default;
const gs = require('glob-stream');
const Bundles = require('../rollup/bundles');
const evalToString = require('../shared/evalToString');
const babylonOptions = {
sourceType: 'module',
// As a parser, babylon has its own options and we can't directly
// import/require a babel preset. It should be kept **the same** as
// the `babel-plugin-syntax-*` ones specified in
// https://github.com/facebook/fbjs/blob/master/babel-preset/configure.js
plugins: [
'classProperties',
'flow',
'jsx',
'trailingFunctionCommas',
'objectRestSpread',
],
};
const warnings = new Set();
function transform(file, enc, cb) {
fs.readFile(file.path, 'utf8', function(err, source) {
if (err) {
cb(err);
return;
}
const ast = babylon.parse(source, babylonOptions);
traverse(ast, {
CallExpression: {
exit: function(astPath) {
if (astPath.get('callee').isIdentifier({name: 'warning'})) {
const node = astPath.node;
// warning messages can be concatenated (`+`) at runtime, so here's
// a trivial partial evaluator that interprets the literal value
const warningMsgLiteral = evalToString(node.arguments[1]);
warnings.add(JSON.stringify(warningMsgLiteral));
}
},
},
});
cb(null);
});
}
const sourcePaths = Bundles.bundles
.filter(
bundle =>
bundle.bundleTypes.indexOf(Bundles.bundleTypes.FB_DEV) !== -1 ||
bundle.bundleTypes.indexOf(Bundles.bundleTypes.FB_PROD) !== -1
)
.reduce((allPaths, bundle) => [...allPaths, ...bundle.paths], []);
gs(sourcePaths).pipe(
through.obj(transform, cb => {
process.stdout.write(Array.from(warnings).sort().join('\n') + '\n');
cb();
})
);