feat(unshift): add unshift function

djcsdy · djcsdy · commit 06b0e9a11e5d · 2021-03-15T17:00:39.000Z
diff --git a/index.ts b/index.ts
@@ -82,6 +82,14 @@ export function pushFn<T>(value: T): (array: ArrayLike<T>) => T[] {
     return array => push(array, value);
 }
 
+export function unshift<T>(array: ArrayLike<T>, value: T): T[] {
+    return [value, ...coerce(array)];
+}
+
+export function unshiftFn<T>(value: T): (array: ArrayLike<T>) => T[] {
+    return array => unshift(array, value);
+}
+
 export function initial<T>(array: ArrayLike<T>): T[] {
     return array.length === 0 ? [] : nativeSlice.call(array, 0, array.length - 1);
 }

Original file line number	Diff line number	Diff line change
`@@ -82,6 +82,14 @@ export function pushFn<T>(value: T): (array: ArrayLike<T>) => T[] {`
`82`	`82`	`return array => push(array, value);`
`83`	`83`	`}`
`84`	`84`
	`85`	`+export function unshift<T>(array: ArrayLike<T>, value: T): T[] {`
	`86`	`+ return [value, ...coerce(array)];`
	`87`	`+}`
	`88`	`+`
	`89`	`+export function unshiftFn<T>(value: T): (array: ArrayLike<T>) => T[] {`
	`90`	`+ return array => unshift(array, value);`
	`91`	`+}`
	`92`	`+`
`85`	`93`	`export function initial<T>(array: ArrayLike<T>): T[] {`
`86`	`94`	`return array.length === 0 ? [] : nativeSlice.call(array, 0, array.length - 1);`
`87`	`95`	`}`