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29 lines
869 B
TypeScript
29 lines
869 B
TypeScript
/**
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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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/**
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* Throw an exception if the given value is not a number or if it is NaN.
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*/
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export const ensureNumber = (v: unknown): number => {
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if (typeof v != "number" || Number.isNaN(v))
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throw new Error(`Expected a number, instead found ${String(v)}`);
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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 an integral number.
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*/
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export const ensureInteger = (v: unknown): number => {
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if (typeof v != "number")
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throw new Error(`Expected a number, instead found ${String(v)}`);
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if (!Number.isInteger(v))
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throw new Error(`Expected an integer, instead found ${v}`);
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return v;
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};
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