react-native/Libraries/Utilities/RCTLog.js

57 lines
1.4 KiB
JavaScript
Raw Normal View History

2015-01-30 01:10:49 +00:00
/**
* Copyright (c) 2015-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.
2015-01-30 01:10:49 +00:00
*
* @providesModule RCTLog
* @flow
2015-01-30 01:10:49 +00:00
*/
'use strict';
const invariant = require('fbjs/lib/invariant');
2015-01-30 01:10:49 +00:00
const levelsMap = {
2015-01-30 01:10:49 +00:00
log: 'log',
info: 'info',
warn: 'warn',
error: 'error',
fatal: 'error',
2015-01-30 01:10:49 +00:00
};
let warningHandler: ?(Array<any> => void) = null;
const RCTLog = {
2015-01-30 01:10:49 +00:00
// level one of log, info, warn, error, mustfix
logIfNoNativeHook(level: string, ...args: Array<any>): void {
// We already printed in the native console, so only log here if using a js debugger
if (typeof global.nativeLoggingHook === 'undefined') {
RCTLog.logToConsole(level, ...args);
} else {
// Report native warnings to YellowBox
if (warningHandler && level === 'warn') {
warningHandler(...args);
}
}
},
// Log to console regardless of nativeLoggingHook
logToConsole(level: string, ...args: Array<any>): void {
const logFn = levelsMap[level];
2015-01-30 01:10:49 +00:00
invariant(
logFn,
'Level "' + level + '" not one of ' + Object.keys(levelsMap).toString()
2015-01-30 01:10:49 +00:00
);
console[logFn](...args);
},
setWarningHandler(handler: typeof warningHandler): void {
warningHandler = handler;
2015-01-30 01:10:49 +00:00
}
}
module.exports = RCTLog;