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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
92 lines
2.8 KiB
TypeScript
92 lines
2.8 KiB
TypeScript
// Type definitions for arrify 1.0
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// Project: https://github.com/sindresorhus/arrify
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// Definitions by: AnJun Wang <https://github.com/wanganjun>
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// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
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/**
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* @example
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* arrify(undefined) // returns []
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* @example
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* arrify(null) // returns []
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* @example
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* arrify(1) // returns [1]
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* @example
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* arrify([2, 3]) // returns [2, 3]
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*/
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declare function arrify<T>(val: undefined | null | T | T[]): T[];
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/**
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* @example
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* // returns []
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* arrify<number, string>(undefined);
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* @example
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* // returns []
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* arrify<number, string>(null);
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* @example
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* let value: number | string[] = 2018;
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* // returns [2018]
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* arrify<number, string>(value);
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* @example
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* let value: number[] | string | string[] = ['a', 'b'];
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* // returns ['a', 'b']
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* arrify<number, string>(value);
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*/
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declare function arrify<T1, T2>(val: undefined | null | T1 | T2 | T1[] | T2[]): T1[] | T2[];
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/**
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* @example
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* // returns []
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* arrify<boolean, number, string>(undefined);
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* @example
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* // returns []
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* arrify<boolean, number, string>(null);
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* @example
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* let value: boolean | number[] | string[] = true;
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* // returns [true]
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* arrify<boolean, number, string>(value);
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* @example
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* let 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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declare function arrify<T1, T2, T3>(val: undefined | null | T1 | T2 | T3 | T1[] | T2[] | T3[]): T1[] | T2[] | T3[];
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/**
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* @example
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* // returns []
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* arrify<boolean, Date, number, string>(undefined);
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* @example
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* // returns []
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* arrify<boolean, Date, number, string>(null);
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* @example
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* let 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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* @example
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* let 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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declare function arrify<T1, T2, T3, T4>(val: undefined | null | T1 | T2 | T3 | T4 | T1[] | T2[] | T3[] | T4[]): T1[] | T2[] | T3[] | T4[];
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/**
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* @example
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* // returns []
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* arrify<boolean, Date, number, RegExp, string>(undefined);
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* @example
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* // returns []
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* arrify<boolean, Date, number, RegExp, string>(null);
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* @example
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* let 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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* @example
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* let 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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declare function arrify<T1, T2, T3, T4, T5>(val: undefined | null | T1 | T2 | T3 | T4 | T5 | T1[] | T2[] | T3[] | T4[] | T5[]): T1[] | T2[] | T3[] | T4[] | T5[];
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declare namespace arrify {}
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export = arrify;
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