eslint-plugin-unicorn/rules/utils/not-dom-node.js

Various awesome ESLint rules

'use strict';

// AST Types:
// https://github.com/eslint/espree/blob/master/lib/ast-node-types.js#L18
// Only types possible to be `callee` or `argument` are listed
const impossibleNodeTypes = [
	'ArrayExpression',
	'ArrowFunctionExpression',
	'ClassExpression',
	'FunctionExpression',
	'Literal',
	'ObjectExpression',
	'TemplateLiteral'
];

// We might need this later
/* istanbul ignore next */
const isNotDomNode = node =>
	impossibleNodeTypes.includes(node.type) ||
	(node.type === 'Identifier' && node.name === 'undefined');

const notDomNodeSelector = node => [
	...impossibleNodeTypes.map(type => `[${node}.type!="${type}"]`),
	`:not([${node}.type="Identifier"][${node}.name="undefined"])`
].join('');

module.exports = {
	isNotDomNode,
	notDomNodeSelector
};