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web/polyfill: make toArray work on map iterators

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This commit is contained in:
Tulir Asokan 2024-12-23 11:35:23 +02:00
parent 277732efd9
commit 5fae264802
1 changed files with 7 additions and 2 deletions
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9
web/src/util/polyfill.js
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@ -15,7 +15,8 @@
// along with this program. If not, see <https://www.gnu.org/licenses/>.
if (!window.Iterator?.prototype.map) {
;(new Map([])).keys().__proto__.map = function(callbackFn) {
const iterProto = (new Map([])).keys().__proto__
iterProto.map = function(callbackFn) {
const output = []
let i = 0
for (const item of this) {
@ -24,7 +25,7 @@ if (!window.Iterator?.prototype.map) {
}
return output
}
;(new Map([])).keys().__proto__.filter = function(callbackFn) {
iterProto.filter = function(callbackFn) {
const output = []
let i = 0
for (const item of this) {
@ -35,6 +36,10 @@ if (!window.Iterator?.prototype.map) {
}
return output
}
const identity = x => x
iterProto.toArray = function() {
return this.map(identity)
}
Array.prototype.toArray = function() {
return this
}