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46 lines
1.3 KiB
JavaScript
46 lines
1.3 KiB
JavaScript
// gomuks - A Matrix client written in Go.
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// Copyright (C) 2024 Tulir Asokan
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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if (!window.Iterator?.prototype.map) {
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const iterProto = (new Map([])).keys().__proto__
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iterProto.map = function(callbackFn) {
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const output = []
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let i = 0
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for (const item of this) {
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output.push(callbackFn(item, i))
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i++
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}
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return output
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}
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iterProto.filter = function(callbackFn) {
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const output = []
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let i = 0
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for (const item of this) {
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if (callbackFn(item, i)) {
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output.push(item)
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}
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i++
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}
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return output
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}
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const identity = x => x
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iterProto.toArray = function() {
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return this.map(identity)
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}
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Array.prototype.toArray = function() {
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return this
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}
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}
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