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20c0779394
* [arrify] generic improvement * [arrify] add test code * [arrify] fix linting error: replace let with const * [arrify] fix linting error: remove consecutive blank lines
87 lines
2.3 KiB
TypeScript
87 lines
2.3 KiB
TypeScript
import * as arrify from 'arrify';
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/***************** arrify<T> *****************/
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arrify(null);
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arrify<number>(null);
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arrify(undefined);
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arrify<number>(undefined);
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arrify(1);
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arrify([2, 3]);
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function test(val?: string | string[]) {
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arrify(val);
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}
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/***************** arrify<T> *****************/
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/***************** arrify<T1, T2> *****************/
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arrify<number, string>(undefined); // returns []
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arrify<number, string>(null); // returns []
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{
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const value: number | string[] = 2018;
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arrify<number, string>(value); // returns [2018]
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}
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{
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const value: number[] | string | string[] = ['a', 'b'];
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arrify<number, string>(value); // returns ['a', 'b']
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}
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/***************** arrify<T1, T2> *****************/
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/***************** arrify<T1, T2, T3> *****************/
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arrify<boolean, number, string>(undefined);
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arrify<boolean, number, string>(null);
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{
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const value: boolean | number[] | string[] = true;
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// returns [true]
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arrify<boolean, number, string>(value);
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}
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{
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const value: boolean[] | number | string[] = ['a', 'b'];
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// returns ['a', 'b']
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arrify<boolean, number, string>(value);
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}
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/***************** arrify<T1, T2, T3> *****************/
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/***************** arrify<T1, T2, T3, T4> *****************/
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arrify<boolean, Date, number, string>(undefined);
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arrify<boolean, Date, number, string>(null);
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{
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const value: boolean | Date | number[] | string[] = new Date(2018);
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// returns [ new Date(2018) ]
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arrify<boolean, Date, number, string>(value);
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}
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{
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const value: boolean[] | Date[] | number | string = [true, false];
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// returns [true, false]
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arrify<boolean, Date, number, string>(value);
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}
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/***************** arrify<T1, T2, T3, T4> *****************/
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/***************** arrify<T1, T2, T3, T4, T5> *****************/
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arrify<boolean, Date, number, RegExp, string>(undefined);
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arrify<boolean, Date, number, RegExp, string>(null);
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{
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const value: boolean | Date | number[] | RegExp | string[] = /test/;
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// returns [ /test/ ]
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arrify<boolean, Date, number, RegExp, string>(value);
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}
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{
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const value: boolean[] | Date[] | number | RegExp[] | string = [/test1/, /test2/];
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// returns [/test1/, /test2/]
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arrify<boolean, Date, number, RegExp, string>(value);
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}
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/***************** arrify<T1, T2, T3, T4, T5> *****************/
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