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Clean code.

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This commit is contained in:
Lars Jung 2016-06-19 23:05:31 +02:00
parent 324fceb5c3
commit fe9cdbc46b
3 changed files with 20 additions and 39 deletions
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27
src/_h5ai/public/js/pre.js
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@ -1,6 +1,6 @@
/* eslint-disable func-names,no-var */
(function (win) {
if (typeof win !== 'object' || win.window !== win || !win.document) {
if (!win || win.window !== win || !win.document) {
throw new Error('no-window');
}
@ -15,26 +15,13 @@
}
}
assert('console', win.console && typeof win.console.log === 'function');
assert('assign', win.Object && typeof win.Object.assign === 'function');
assert('promise', win.Promise && typeof win.Promise === 'function');
assert('history', win.history && typeof win.history.pushState === 'function');
function isFn(x) {
return typeof x === 'function';
}
assert('canvas', (function () {
var elem = win.document.createElement('canvas');
return elem.getContext && elem.getContext('2d');
}()));
assert('storage', (function () {
var key = '#test#';
try {
win.localStorage.setItem(key, key);
win.localStorage.removeItem(key);
return true;
} catch (e) {
return false;
}
}()));
assert('console', win.console && isFn(win.console.log));
assert('assign', win.Object && isFn(win.Object.assign));
assert('promise', isFn(win.Promise));
}(this));
/* eslint-enable */