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35 lines
749 B
TypeScript
35 lines
749 B
TypeScript
// Loaded from https://deno.land/x/segno@v1.1.0/lib/validations/isJSON.ts
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// @ts-ignore allowing typedoc to build
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import { assertString } from '../helpers/assertString.ts';
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type JSONOptions = {
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allowPrimitives?: boolean;
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};
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/**
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* @ignore
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*/
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const defaultJSONOptions = {
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allowPrimitives: false,
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};
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export const isJSON = (str: string, options?: JSONOptions) => {
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assertString(str);
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try {
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options = { ...defaultJSONOptions, ...options };
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let primitives: Array<boolean | null> = [];
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if (options.allowPrimitives) {
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primitives = [null, false, true];
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}
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const obj = JSON.parse(str);
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return primitives.includes(obj) || (!!obj && typeof obj === 'object');
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} catch (e) {
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/* ignore */
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}
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return false;
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};
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