15 lines
405 B
TypeScript
15 lines
405 B
TypeScript
import { Validator, Args } from "../mod.ts";
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export const isString: Validator = {
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type: "isString",
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check: (value: any) => {
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if (value === null || value === undefined) return;
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if (typeof value !== "string" && !(value instanceof String)) {
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return {};
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}
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},
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message: (value: any, args?: Args) => {
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return `The value '${value && value.toString()}' has to be a string.`;
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},
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};
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