Complexity Score
Low
Open Issues
N/A
Dependent Projects
219
Weekly Downloadsglobal
6,270,726
Keywords
License
- MIT
- Yesattribution
- Permissivelinking
- Permissivedistribution
- Permissivemodification
- Nopatent grant
- Yesprivate use
- Permissivesublicensing
- Notrademark grant
Downloads
Readme
is-reference
Utility for determining whether an AST node is a reference.
foo
is a reference in these cases:
console.log(foo);
var foo;
function foo() {}
function bar(foo) {}
export { foo as x };
foo
is not a reference in these cases:
var obj = { foo: 1 };
console.log(obj.foo);
export { x as foo };
In all cases, foo
is an Identifier
node, but the two kinds must be treated differently for the purposes of scope analysis etc. (The examples are non-exhaustive.)
Installation
npm install is-reference
Usage
Example using Acorn and estree-walker:
import { parse } from 'acorn';
import { walk } from 'estree-walker';
import is_reference from 'is-reference';
const identifiers = [];
const references = [];
const ast = parse(`var a = b.c;`);
walk(ast, {
enter(node, parent) {
if (node.type === 'Identifier') identifiers.push(node);
if (is_reference(node, parent)) references.push(node);
}
});
identifiers.forEach(node => console.log(node.name)); // a, b, c
references.forEach(node => console.log(node.name)); // a, b
License
MIT
Dependencies
CVE IssuesActive
0
Scorecards Score
3.90
Test Coverage
No Data
Follows Semver
Yes
Github Stars
24
Dependenciestotal
8
DependenciesOutdated
0
DependenciesDeprecated
0
Threat Modelling
No Data
Repo Audits
No Data
Learn how to distribute is-reference in your own private NPM registry
14 Releases
NPM on Cloudsmith