Security News
tea.xyz Spam Plagues npm and RubyGems Package Registries
Tea.xyz, a crypto project aimed at rewarding open source contributions, is once again facing backlash due to an influx of spam packages flooding public package registries.
lexical-scope
Advanced tools
Readme
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.log(JSON.stringify(scope,null,2));
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.expression.body.7.arguments.0": [
"BAR",
"doom"
],
"body.7.expression.body.7.arguments.0.body.body.1.expression.body.1.arguments.0": [
"xyz",
"ZZZZZZZZZZZZ"
],
"body.7.expression.body.7.arguments.0.body.body.2": []
},
"globals": {
"implicit": [
"w",
"foo",
"process",
"console",
"xyz"
],
"implicitProperties": {
"w": [
"foo"
],
"foo": [
"()"
],
"process": [
"nextTick"
],
"console": [
"log"
],
"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.
scope.globals.implicitProperties
contains the properties of global variable
names that have been used. There are two special implicit property names:
"()"
- when an implicit variable has been called"*"
- when an implicit variable has been used in a context that is not a
property and not a callWith 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 48,673 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.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
Security News
Tea.xyz, a crypto project aimed at rewarding open source contributions, is once again facing backlash due to an influx of spam packages flooding public package registries.
Security News
As cyber threats become more autonomous, AI-powered defenses are crucial for businesses to stay ahead of attackers who can exploit software vulnerabilities at scale.
Security News
UnitedHealth Group disclosed that the ransomware attack on Change Healthcare compromised protected health information for millions in the U.S., with estimated costs to the company expected to reach $1 billion.