import extend from './extend';
import { hooks } from './hooks';
import isUndefined from './is-undefined';
function warn(msg) {
if (hooks.suppressDeprecationWarnings === false &&
(typeof console !== 'undefined') && console.warn) {
console.warn('Deprecation warning: ' + msg);
}
}
export function deprecate(msg, fn) {
var firstTime = true;
return extend(function () {
if (hooks.deprecationHandler != null) {
hooks.deprecationHandler(null, msg);
}
if (firstTime) {
warn(msg + '\nArguments: ' + Array.prototype.slice.call(arguments).join(', ') + '\n' + (new Error()).stack);
firstTime = false;
}
return fn.apply(this, arguments);
}, fn);
}
var deprecations = {};
export function deprecateSimple(name, msg) {
if (hooks.deprecationHandler != null) {
hooks.deprecationHandler(name, msg);
}
if (!deprecations[name]) {
warn(msg);
deprecations[name] = true;
}
}
hooks.suppressDeprecationWarnings = false;
hooks.deprecationHandler = null;
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