Keeps values from left, while a test passes.
Alternatives: take, takeRight, takeWhile, takeWhileRight.
Similar: take, drop.
This is part of package extra-array.
This is browserified, minified version of @extra-array/take-while.
It is exported as global variable array_takeWhile.
CDN: unpkg, jsDelivr.
array.takeWhile(x, ft);
// x: an array
// ft: test function (v, i, x)
const array = require("extra-array");
var x = [1, 2, 3, 4, 5];
array.takeWhile(x, v => v < 3);
// [ 1, 2 ]
array.takeWhile(x, v => v < 4);
// [ 1, 2, 3 ]