18 lines
531 B
TypeScript
18 lines
531 B
TypeScript
/**
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* Throw an exception if the given value is `null` or `undefined`.
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*/
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export const ensure = <T>(v: T | null | undefined): T => {
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if (v === null) throw new Error("Required value was null");
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if (v === undefined) throw new Error("Required value was undefined");
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return v;
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};
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/**
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* Throw an exception if the given value is not a string.
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*/
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export const ensureString = (v: unknown): string => {
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if (typeof v != "string")
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throw new Error(`Expected a string, instead found ${String(v)}`);
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return v;
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};
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