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lexical-scope
Advanced tools
detect global and local lexical identifiers from javascript source code
var detect = require('lexical-scope');
var fs = require('fs');
var src = fs.readFileSync(__dirname + '/src.js');
var scope = detect(src);
console.dir(scope);
input:
var x = 5;
var y = 3, z = 2;
w.foo();
w = 2;
RAWR=444;
RAWR.foo();
BLARG=3;
foo(function () {
var BAR = 3;
process.nextTick(function (ZZZZZZZZZZZZ) {
console.log('beep boop');
var xyz = 4;
x += 10;
x.zzzzzz;
ZZZ=6;
});
function doom () {
}
ZZZ.foo();
});
console.log(xyz);
output:
$ node example/detect.js
{ locals:
{ '': [ 'x', 'y', 'z' ],
'body.7.arguments.0': [ 'BAR', 'doom' ],
'body.7.arguments.0.body.1.arguments.0': [ 'xyz' ],
'body.7.arguments.0.body.2': [] },
globals:
{ implicit: [ 'w', 'foo', 'process', 'console', 'xyz' ],
exported: [ 'w', 'RAWR', 'BLARG', 'ZZZ' ] } }
If you are using a modern browser, you can go to http://lexical-scope.forbeslindesay.co.uk/ for a live demo.
var detect = require('lexical-scope')
Return a scope
structure from a javascript source string src
.
scope.locals
maps scope name keys to an array of local variable names declared
with var
. The key name ''
refers to the top-level scope.
scope.globals.implicit
contains the global variable names that are expected to
already exist in the environment by the script.
scope.globals.explicit
contains the global variable names that are exported by
the script.
With npm do:
npm install lexical-scope
MIT
FAQs
detect global and local lexical identifiers from javascript source code
The npm package lexical-scope receives a total of 177,827 weekly downloads. As such, lexical-scope popularity was classified as popular.
We found that lexical-scope demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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