mirror of
https://github.com/facebook/react.git
synced 2025-11-01 09:12:30 +00:00
Ben Newman
93 lines
2.4 KiB
JavaScript
93 lines
2.4 KiB
JavaScript
/**
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* Copyright 2013 Facebook, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* This module allows interception of console.* method calls, so that
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* listeners other than the native console object can consume logged
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* messages.
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*/
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var global = Function("return this")();
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var Ap = Array.prototype;
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var slice = Ap.slice;
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var nativeConsole;
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if ("console" in global) {
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var gc = global.console;
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try { delete global.console } catch (ignored) {}
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nativeConsole = global.console || gc;
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global.console = gc;
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}
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// Provide a reliable console interface in all browsers.
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global.console = exports;
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function makeLogger(method) {
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var logger = exports[method] = function() {
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var args = slice.call(arguments);
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listeners.forEach(function(listener) {
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listener(method, args, logger);
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});
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};
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}
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makeLogger("info");
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makeLogger("log");
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makeLogger("debug");
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makeLogger("warn");
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makeLogger("error");
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makeLogger("dir");
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makeLogger("dirxml");
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makeLogger("trace");
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makeLogger("assert");
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makeLogger("count");
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makeLogger("markTimeline");
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makeLogger("profile");
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makeLogger("profileEnd");
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makeLogger("time");
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makeLogger("timeEnd");
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makeLogger("timeStamp");
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makeLogger("group");
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makeLogger("groupCollapsed");
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makeLogger("groupEnd");
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makeLogger("clear");
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var listeners = [];
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function addListener(listener) {
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listeners.push(listener);
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}
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exports.addListener = addListener
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function clean(arg) {
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if (typeof arg === "string") {
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// Remove any xterm-color escape sequences.
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// TODO Display colors in console if possible.
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arg = arg.replace(/\033\[\d+m/g, "");
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}
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return arg;
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}
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if (nativeConsole) {
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// If present, the native console object becomes a listener just like
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// any other.
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addListener(function(method, args) {
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var method = nativeConsole[method];
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if (method) {
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method.apply(nativeConsole, args.map(clean));
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} else {
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// Ignore this call.
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}
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});
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}
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