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Runtime error
Runtime error
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/** @typedef { import('estree').Node} Node */
/** @typedef {Node | {
* type: 'PropertyDefinition';
* computed: boolean;
* value: Node
* }} NodeWithPropertyDefinition */
/**
*
* @param {NodeWithPropertyDefinition} node
* @param {NodeWithPropertyDefinition} parent
* @returns {boolean}
*/
export default function is_reference (node, parent) {
if (node.type === 'MemberExpression') {
return !node.computed && is_reference(node.object, node);
}
if (node.type === 'Identifier') {
if (!parent) return true;
switch (parent.type) {
// disregard `bar` in `foo.bar`
case 'MemberExpression': return parent.computed || node === parent.object;
// disregard the `foo` in `class {foo(){}}` but keep it in `class {[foo](){}}`
case 'MethodDefinition': return parent.computed;
// disregard the `foo` in `class {foo=bar}` but keep it in `class {[foo]=bar}` and `class {bar=foo}`
case 'PropertyDefinition': return parent.computed || node === parent.value;
// disregard the `bar` in `{ bar: foo }`, but keep it in `{ [bar]: foo }`
case 'Property': return parent.computed || node === parent.value;
// disregard the `bar` in `export { foo as bar }` or
// the foo in `import { foo as bar }`
case 'ExportSpecifier':
case 'ImportSpecifier': return node === parent.local;
// disregard the `foo` in `foo: while (...) { ... break foo; ... continue foo;}`
case 'LabeledStatement':
case 'BreakStatement':
case 'ContinueStatement': return false;
default: return true;
}
}
return false;
}
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