wehub-resource-sync
25 lines
905 B
TypeScript
25 lines
905 B
TypeScript
/**
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* Strip trailing slash characters from a string without using a regex
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* quantifier on uncontrolled input (avoids CodeQL `js/polynomial-redos`).
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*
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* Equivalent to `value.replace(/\/+$/, "")` but runs in O(n) guaranteed
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* time with no backtracking risk.
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*/
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export function stripTrailingSlashes(value: string): string {
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let end = value.length;
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while (end > 0 && value.charCodeAt(end - 1) === 0x2f /* '/' */) {
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end--;
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}
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return end === value.length ? value : value.slice(0, end);
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}
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/**
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* Normalize a base URL by trimming whitespace and stripping trailing slashes.
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* Handles non-string inputs gracefully (returns empty string).
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* Single source of truth — replaces per-file inline copies in config/*.ts.
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*/
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export function normalizeBaseUrl(value: string | null | undefined): string {
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const str = typeof value === "string" ? value : "";
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return stripTrailingSlashes(str.trim());
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}
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