26 lines
683 B
JavaScript
26 lines
683 B
JavaScript
function trimEnd(str, chars) {
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if (chars === undefined) {
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return str.trimEnd();
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}
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let endIndex = str.length;
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switch (typeof chars) {
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case 'string': {
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if (chars.length !== 1) {
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throw new Error(`The 'chars' parameter should be a single character string.`);
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}
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while (endIndex > 0 && str[endIndex - 1] === chars) {
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endIndex--;
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}
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break;
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}
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case 'object': {
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while (endIndex > 0 && chars.includes(str[endIndex - 1])) {
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endIndex--;
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}
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}
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}
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return str.substring(0, endIndex);
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}
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export { trimEnd };
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