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