文件操作 - is-reference.js

文件: /var/www/OLD/node_modules/is-reference/dist/is-reference.js

编辑文件内容

(function (global, factory) {
	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
	typeof define === 'function' && define.amd ? define(factory) :
	(global = global || self, global.isReference = factory());
}(this, (function () { 'use strict';

function isReference(node, parent) {
	    if (node.type === 'MemberExpression') {
	        return !node.computed && isReference(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 'FieldDefinition': 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;
	}

return isReference;

})));

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