no-array-finder-methods.md

Disallow using ElementArrayFinder methods on ElementFinder

This rule is inspired by this problem when ElementArrayFinder methods were unintentionally used on ElementFinder.

This rule is especially useful if ESLint is configured in your IDE to scan on the fly - you would catch these kinds of problems early.

Rule details

Here is the current list of methods the rule is looking for:

'first', 'last', 'get', 'filter', 'map', 'each', 'reduce', 'count'

👎 Any use of the following patterns are considered warnings:

element(by.css(".class")).get(0);
$(".class").first();
element(by.css(".class")).last();
element(by.css(".class")).map(function (elm) {});
$(".class").filter(function (elm) {});
element(by.css(".class")).each(function (elm) {});
element(by.css(".class1")).element(by.css(".class2")).first();
element(by.css(".class1")).$(".class2").first();
$(".class1").element(by.css(".class2")).first();
$(".class1").$(".class2").first();

👍 The following patterns are not warnings:

element.all(by.css(".class")).get(0);
$$(".class").first();
element.all(by.css(".class")).last();
element.all(by.css(".class")).map(function (elm) {});
$$(".class").filter(function (elm) {});
element.all(by.css(".class")).each(function (elm) {});
element(by.css(".class1")).element.all(by.css(".class2")).first();
element(by.css(".class1")).$$(".class2").first();
$(".class1").element.all(by.css(".class2")).first();
$(".class1").$$(".class2").first();