e24c92918e
Fix/BOOK-398 polyfill at * fix(BOOK-398): Add polyfills for .at() * fix(BOOK-398): Add polyfills for .at() Approved-by: Linus Flood
27 lines
587 B
TypeScript
27 lines
587 B
TypeScript
if (!Array.prototype.at) {
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Array.prototype.at = function (index: number) {
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// Convert the index to an integer
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index = Math.trunc(index) || 0
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if (index < 0) {
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index += this.length
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}
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if (index < 0 || index >= this.length) {
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return undefined
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}
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return this[index]
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}
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}
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if (!String.prototype.at) {
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String.prototype.at = function (index: number) {
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index = Math.trunc(index) || 0
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if (index < 0) {
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index += this.length
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}
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if (index < 0 || index >= this.length) {
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return undefined
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}
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return this.charAt(index)
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}
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}
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