36 lines
1.0 KiB
JavaScript
36 lines
1.0 KiB
JavaScript
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'use strict';
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var enabled = require('enabled');
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/**
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* Bare minimum browser version of diagnostics. It doesn't need fancy pancy
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* detection algorithms. The code is only enabled when *you* enable it for
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* debugging purposes.
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*
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* @param {String} name Namespace of the diagnostics instance.
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* @returns {Function} The logger.
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* @api public
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*/
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module.exports = function factory(name) {
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if (!enabled(name)) return function diagnopes() {};
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return function diagnostics() {
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var args = Array.prototype.slice.call(arguments, 0);
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//
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// We cannot push a value as first argument of the argument array as
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// console's formatting %s, %d only works on the first argument it receives.
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// So in order to prepend our namespace we need to override and prefix the
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// first argument.
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//
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args[0] = name +': '+ args[0];
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//
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// So yea. IE8 doesn't have an apply so we need a work around to puke the
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// arguments in place.
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//
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try { Function.prototype.apply.call(console.log, console, args); }
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catch (e) {}
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};
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};
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