diego-santos/is
1
0
Fork 0
forked from orbit-oss/is
Code Pull requests Activity

Add emptiness methods (#61)

Browse source 
Fix #53
This commit is contained in:
Arfat Salman 2018-09-28 11:54:35 +05:30 • committed by Sindre Sorhus
parent 65c94f1a02
commit 6e07df5896
3 changed files with 169 additions and 51 deletions
Download patch file Download diff file Expand all files Collapse all files

20
source/index.ts
View file

@ -270,12 +270,22 @@ namespace is { // tslint:disable-line:no-namespace
export const odd = isAbsoluteMod2(1);
const isWhiteSpaceString = (value: any) => string(value) && /\S/.test(value) === false;
const isEmptyStringOrArray = (value: any) => (string(value) || array(value)) && value.length === 0;
const isEmptyObject = (value: any) => !map(value) && !set(value) && object(value) && Object.keys(value).length === 0;
const isEmptyMapOrSet = (value: any) => (map(value) || set(value)) && value.size === 0;
export const empty = (value: any) => falsy(value) || isEmptyStringOrArray(value) || isEmptyObject(value) || isEmptyMapOrSet(value);
export const emptyOrWhitespace = (value: any) => empty(value) || isWhiteSpaceString(value);
export const emptyArray = (value: any) => array(value) && value.length === 0;
export const nonEmptyArray = (value: any) => array(value) && value.length > 0;
export const emptyString = (value: any) => string(value) && value.length === 0;
export const nonEmptyString = (value: any) => string(value) && value.length > 0;
export const emptyStringOrWhitespace = (value: any) => emptyString(value) || isWhiteSpaceString(value);
export const emptyObject = (value: any) => object(value) && !map(value) && !set(value) && Object.keys(value).length === 0;
export const nonEmptyObject = (value: any) => object(value) && !map(value) && !set(value) && Object.keys(value).length > 0;
export const emptySet = (value: any) => set(value) && value.size === 0;
export const nonEmptySet = (value: any) => set(value) && value.size > 0;
export const emptyMap = (value: any) => map(value) && value.size === 0;
export const nonEmptyMap = (value: any) => map(value) && value.size > 0;
type ArrayMethod = (fn: (value: any, index: number, array: any[]) => boolean, thisArg?: any) => boolean;
const predicateOnArray = (method: ArrayMethod, predicate: any, values: any[]) => {