/** Returns a regular expression quantifier with an upper and lower limit. */
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export function limit(lower, upper) {
|
if (lower < 0 || upper <= 0 || upper < lower) {
|
throw new TypeError();
|
}
|
|
return "{".concat(lower, ",").concat(upper, "}");
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}
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/**
|
* Trims away any characters after the first match of {@code pattern} in {@code candidate},
|
* returning the trimmed version.
|
*/
|
|
export function trimAfterFirstMatch(regexp, string) {
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var index = string.search(regexp);
|
|
if (index >= 0) {
|
return string.slice(0, index);
|
}
|
|
return string;
|
}
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export function startsWith(string, substring) {
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return string.indexOf(substring) === 0;
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}
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export function endsWith(string, substring) {
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return string.indexOf(substring, string.length - substring.length) === string.length - substring.length;
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}
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