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StringPadStart.ts

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export function __TS__StringPadStart(this: string, maxLength: number, fillString = " "): string {

if (maxLength !== maxLength) maxLength = 0;

if (maxLength === -Infinity || maxLength === Infinity) {

throw "Invalid string length";

}

if (this.length >= maxLength || fillString.length === 0) {

return this;

}

maxLength -= this.length;

if (maxLength > fillString.length) {

fillString += fillString.repeat(maxLength / fillString.length);

}

return string.sub(fillString, 1, Math.floor(maxLength)) + this;

}