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f3e502c613
FB bundles wrap warning() calls in __DEV__ Split dev-mode transforms into separate parts: 1) umd+cjs+fb: Wrap warning calls with process.env checks 2) umd+cjs: Replace error messages with minified codes Also updated transforms to use __DEV__ since it transforms to smaller code after stripEnvVariables is run. Also renamed 'scripts/error-codes/dev-expression-with-codes.js' -> 'scripts/error-codes/replace-invariant-error-codes.js'
55 lines
1.4 KiB
JavaScript
55 lines
1.4 KiB
JavaScript
/**
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* Copyright (c) 2013-present, Facebook, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the BSD-style license found in the
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* LICENSE file in the root directory of this source tree. An additional grant
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* of patent rights can be found in the PATENTS file in the same directory.
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*/
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'use strict';
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module.exports = function(babel, options) {
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var t = babel.types;
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var DEV_EXPRESSION = t.identifier('__DEV__');
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var 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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var 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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