23 lines
584 B
TypeScript
23 lines
584 B
TypeScript
export function asStringOrNull(str: unknown) {
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return typeof str === "string" ? str : null;
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}
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export function asStringOrUndefined(str: unknown) {
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return typeof str === "string" ? str : undefined;
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}
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export function asNumberOrUndefined(str: unknown) {
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return typeof str === "string" ? parseInt(str) : undefined;
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}
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export function asNumberOrThrow(str: unknown) {
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return parseInt(asStringOrThrow(str));
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}
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export function asStringOrThrow(str: unknown): string {
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if (typeof str !== "string") {
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throw new Error(`Expected "string" - got ${typeof str}`);
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}
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return str;
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}
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