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src/utils/parseUtils.ts
63 строки
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Adam Weeden
Enable TypeScript strict:true, and more typescript-eslint rules (#1223)
16 июн 2021, 05:20
Не верифицирован
16 июн 2021, 05:20
7a08a2d
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import * as log from 'loglevel'; import { isWindows } from '../helpers/helpers'; export function parseBoolean( val: boolean | string | number | undefined, _default: boolean, ): boolean { if (val === undefined) { return _default; } try { if (typeof val === 'boolean') { return val; } val = String(val); switch (val.toLocaleLowerCase()) { case 'true': case '1': case 'yes': return true; case 'false': case '0': case 'no': return false; default: return _default; } } catch { return _default; } } export function parseBooleanOrString(val: string): boolean | string { switch (val) { case 'true': return true; case 'false': return false; default: return val; } } export function parseJson<Type>(val: string): Type | undefined { if (!val) return undefined; try { return JSON.parse(val) as Type; } catch (err: unknown) { const windowsShellHint = isWindows() ? `\n In particular, Windows cmd doesn't have single quotes, so you have to use only double-quotes plus escaping: "{\\"someKey\\": \\"someValue\\"}"` : ''; log.error( `Unable to parse JSON value: ${val}\n` + `JSON should look like {"someString": "someValue", "someBoolean": true, "someArray": [1,2,3]}.\n` + ` - Only double quotes are allowed, single quotes are not.\n` + ` - Learn how your shell behaves and escapes characters.${windowsShellHint}\n` + ` - If unsure, validate your JSON using an online service.`, ); throw err; } }