no-duplicate-template-bindings.md

Disallows duplicate names in template bindings (no-duplicate-template-bindings)

Binding a property or attribute multiple times results in the previous values being overwritten, thus making them useless.

Rule Details

This rule disallows binding the same property multiple times in templates.

The following patterns are considered warnings:

html`<x-foo bar bar>`;
html`<x-foo bar=${x} bar=${y} baz>`;

The following patterns are not warnings:

html`<x-foo bar baz=${x}>`;

When Not To Use It

If you don't care about repeated bindings, then you will not need this rule.