mirror of
https://github.com/zebrajr/react.git
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e8e62ebb59
* use different eslint config for es6 and es5 * remove confusing eslint/baseConfig.js & add more eslint setting for es5, es6 * more clear way to run eslint on es5 & es6 file * seperate ESNext, ES6, ES6 path, and use different lint config * rename eslint config file & update eslint rules * Undo yarn.lock changes * Rename a file * Remove unnecessary exceptions * Refactor a little bit * Refactor and tweak the logic * Minor issues
53 lines
1.3 KiB
JavaScript
53 lines
1.3 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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module.exports = function(babel, options) {
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const t = babel.types;
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const DEV_EXPRESSION = t.identifier('__DEV__');
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const SEEN_SYMBOL = Symbol('expression.seen');
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return {
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visitor: {
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CallExpression: {
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exit: function(path) {
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const node = path.node;
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// Ignore if it's already been processed
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if (node[SEEN_SYMBOL]) {
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return;
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}
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if (path.get('callee').isIdentifier({name: 'warning'})) {
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node[SEEN_SYMBOL] = true;
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// Turns this code:
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//
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// warning(condition, argument, argument);
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//
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// into this:
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//
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// if (__DEV__) {
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// warning(condition, argument, argument);
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// }
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//
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// The goal is to strip out warning calls entirely in production.
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path.replaceWith(
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t.ifStatement(
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DEV_EXPRESSION,
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t.blockStatement([t.expressionStatement(node)])
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)
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);
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}
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},
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},
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},
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};
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};
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