| 1 | 'use strict'; |
| 2 | |
| 3 | function checkDCE() { |
| 4 | /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */ |
| 5 | if ( |
| 6 | typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined' || |
| 7 | typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE !== 'function' |
| 8 | ) { |
| 9 | return; |
| 10 | } |
| 11 | if (process.env.NODE_ENV !== 'production') { |
| 12 | // This branch is unreachable because this function is only called |
| 13 | // in production, but the condition is true only in development. |
| 14 | // Therefore if the branch is still here, dead code elimination wasn't |
| 15 | // properly applied. |
| 16 | // Don't change the message. React DevTools relies on it. Also make sure |
| 17 | // this message doesn't occur elsewhere in this function, or it will cause |
| 18 | // a false positive. |
| 19 | throw new Error('^_^'); |
| 20 | } |
| 21 | try { |
| 22 | // Verify that the code above has been dead code eliminated (DCE'd). |
| 23 | __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE(checkDCE); |
| 24 | } catch (err) { |
| 25 | // DevTools shouldn't crash React, no matter what. |
| 26 | // We should still report in case we break this code. |
| 27 | console.error(err); |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | if (process.env.NODE_ENV === 'production') { |
| 32 | // DCE check should happen before ReactDOM bundle executes so that |
| 33 | // DevTools can report bad minification during injection. |
| 34 | checkDCE(); |
| 35 | module.exports = require('./cjs/react-dom.production.js'); |
| 36 | } else { |
| 37 | module.exports = require('./cjs/react-dom.development.js'); |
| 38 | } |