74 lines
1.9 KiB
JavaScript
74 lines
1.9 KiB
JavaScript
'use strict';
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var shims = [];
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// Shim String.prototype.normalize
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try {
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var missing = [];
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// Some platforms are missing certain normalization forms
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var forms = ["NFD", "NFC", "NFKD", "NFKC"];
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for (var i = 0; i < forms.length; i++) {
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try {
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"test".normalize(forms[i]);
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} catch(error) {
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missing.push(forms[i]);
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}
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}
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if (missing.length) {
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shims.push("String.prototype.normalize (missing: " + missing.join(", ") + ")");
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throw new Error('bad normalize');
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}
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// Some platforms have a native normalize, but it is broken; so we force our shim
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if (String.fromCharCode(0xe9).normalize('NFD') !== String.fromCharCode(0x65, 0x0301)) {
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shims.push("String.prototype.normalize (broken)");
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throw new Error('bad normalize');
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}
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} catch (error) {
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var unorm = require('./unorm.js');
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String.prototype.normalize = function(form) {
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var func = unorm[(form || 'NFC').toLowerCase()];
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if (!func) { throw new RangeError('invalid form - ' + form); }
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return func(this);
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}
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}
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// Shim atob and btoa
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var base64 = require('./base64.js');
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if (!global.atob) {
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shims.push("atob");
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global.atob = base64.atob;
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}
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if (!global.btoa) {
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shims.push("btoa");
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global.btoa = base64.btoa;
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}
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// Shim Promise
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// @TODO: Check first?
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var promise = require('./es6-promise.auto.js');
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// Shim ArrayBuffer.isView
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if (!ArrayBuffer.isView) {
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shims.push("ArrayBuffer.isView");
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ArrayBuffer.isView = function(obj) {
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// @TODO: This should probably check various instanceof aswell
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return !!(obj.buffer);
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}
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}
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// Shim nextTick
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if (!global.nextTick) {
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shims.push("nextTick");
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global.nextTick = function (callback) { setTimeout(callback, 0); }
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}
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if (shims.length) {
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console.log("Shims Injected:");
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for (var i = 0; i < shims.length; i++) {
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console.log(' - ' + shims[i]);
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}
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}
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