eslint-plugin-goog

ESLint plugin for Closure Library.

Usage

1. Install the package:

npm i eslint-plugin-goog --save-dev

2. Specify "goog" as a plugin in your .eslintrc:

{
	plugins: [
		"goog"
	]
}

3. Enable all of the rules that you would like to use in your .eslintrc:

{
	rules: [
		"goog/no-undeclared-deps": ...
	]
}

Rules

no-undeclared-deps (fixable)

Use this rule to detect usage of undeclared dependencies (missed goog.require(<namespace>) expression).

Options:

{
	domains: string[], // List of root namespaces that rule will use for report as undeclared
	excludedPatterns: string[], // List of patterns (string literally or RegExp pattern string) that will be excluded from reports
	knownNamespaces: string[] // List of provided namespaces that rule will be able to fix
}

Also domains and knownNamespaces can be specified by shared settings.

Caveat: only namespaces that are given by options knownNamespaces will be auto fixed. Plugin provides module nsUtils to ease retrieving of known namespaces, e.x.:

// Your .eslintrc.js

const {nsUtils} = require('eslint-plugin-goog');

const knownNamespaces = [
	...nsUtils.findByPattern(path.join(__dirname , 'myapp', '**', '*.js')),
	...nsUtils.findByPattern(path.join(__dirname , 'node_modules', 'zombiebox', '**', '*.js')),
];

module.exports = {
	// ...
	rules: [
		'goog/no-undeclared-deps': ['error', {
			domains: ['myapp'],
			knownNamespaces
		}]
	]
}

no-unused-deps (fixable)

Use this rule to detect when declared dependencies (goog.require(<namespace>) expression) are unused in code.

Options:

{
	domains: string[] // List of root namespaces that rule will use for report as undeclared
}

Also domains can be specified by shared settings.

no-duplicates (fixable)

Use this rule to prevent duplicates in goog.require or goog.provide expressions.

right-order (fixable)

Use this rule to achieve right order of goog expressions. This rule does:

• Checks that goog expressions are sorted alphabetically by its namespace;
• Checks that goog expressions are at top of a file;
• Checks that goog.provide goes before goog.require;
• Checks that there are no additional code or comments between goog expressions;
• Restricts nested goog expressions (parent AST node should have Program type).