@zitterorg/ullam-nostrum-sapiente v2.2.33
@zitterorg/ullam-nostrum-sapiente
Constants and utilities about visitor keys to traverse AST.
💿 Installation
Use npm to install.
$ npm install @zitterorg/ullam-nostrum-sapiente
Requirements
- Node.js
^18.18.0
,^20.9.0
, or>=21.1.0
📖 Usage
To use in an ESM file:
import * as evk from "@zitterorg/ullam-nostrum-sapiente"
To use in a CommonJS file:
const evk = require("@zitterorg/ullam-nostrum-sapiente")
evk.KEYS
type:
{ [type: string]: string[] | undefined }
Visitor keys. This keys are frozen.
This is an object. Keys are the type of ESTree nodes. Their values are an array of property names which have child nodes.
For example:
console.log(evk.KEYS.AssignmentExpression) // → ["left", "right"]
evk.getKeys(node)
type:
(node: object) => string[]
Get the visitor keys of a given AST node.
This is similar to Object.keys(node)
of ES Standard, but some keys are excluded: parent
, leadingComments
, trailingComments
, and names which start with _
.
This will be used to traverse unknown nodes.
For example:
const node = {
type: "AssignmentExpression",
left: { type: "Identifier", name: "foo" },
right: { type: "Literal", value: 0 }
}
console.log(evk.getKeys(node)) // → ["type", "left", "right"]
evk.unionWith(additionalKeys)
type:
(additionalKeys: object) => { [type: string]: string[] | undefined }
Make the union set with evk.KEYS
and the given keys.
- The order of keys is,
additionalKeys
is at first, thenevk.KEYS
is concatenated after that. - It removes duplicated keys as keeping the first one.
For example:
console.log(evk.unionWith({
MethodDefinition: ["decorators"]
})) // → { ..., MethodDefinition: ["decorators", "key", "value"], ... }
📰 Change log
See GitHub releases.
🍻 Contributing
Welcome. See ESLint contribution guidelines.
Development commands
npm test
runs tests and measures code coverage.npm run lint
checks source codes with ESLint.npm run test:open-coverage
opens the code coverage report of the previous test with your default browser.
7 days ago
9 days ago
8 days ago
10 days ago
11 days ago
12 days ago
14 days ago
13 days ago
24 days ago
25 days ago
26 days ago
18 days ago
17 days ago
20 days ago
19 days ago
21 days ago
23 days ago
16 days ago
15 days ago
22 days ago
27 days ago
28 days ago
1 month ago
29 days ago
1 month ago
1 month ago
1 month ago
1 month ago
1 month ago
1 month ago
1 month ago
1 month ago
1 month ago
1 month ago
1 month ago
1 month ago
1 month ago