npmpackage.info

Gathering detailed insights and metrics for babylon

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babylon

PSA: moved into babel/babel as @babel/parser -->

6.18.0

1,711

MIT

JavaScript

32.77 kB

2,625,599,442 2.9

Installations

npm install babylon

Developer Guide

BETA

Typescript

No

Module System

CommonJS

Node Version

8.1.4

NPM Version

5.3.0 Score

99.3

Supply Chain

100

Quality

81.5

Maintenance

100

Vulnerability

100

License

Pull Requests

Open

1

Total

506

Closed

82

Merged

423

Issues

Open

1

Total

276

Closed

275

Releases

v7.0.0-beta.30

Published on 28 Oct 2017

v7.0.0-beta.29

Published on 16 Oct 2017

v7.0.0-beta.28

Published on 14 Oct 2017

v7.0.0-beta.27

Published on 29 Sept 2017

v7.0.0-beta.26

Published on 27 Sept 2017

v7.0.0-beta.25

Published on 25 Sept 2017

View all 61 releases

Contributors

148

Unable to fetch Contributors

View all 148 contributors

Languages

JavaScript

Makefile

JavaScript (99.59%)

Makefile (0.41%)

Developer

babel

Download Statistics

Total Downloads

2,625,599,442

Last Day

769,879

Last Week

3,408,592

Last Month

16,670,844

Last Year

248,464,474

GitHub Statistics

1,711 Stars

1,767 Commits

256 Forks

52 Watching

9 Branches

148 Contributors

Bundle Size

120.58 kB

Minified

32.77 kB

Minified + Gzipped

Bundlephobia

Maintainers

Package Meta Information

Latest Version

6.18.0

Package Id

babylon@6.18.0

Size

67.62 kB

NPM Version

5.3.0

Node Version

8.1.4

Publised On

15 Aug 2017

Total Downloads

Cumulative downloads

Total Downloads

2,625,599,442

Last day

-2.6%

769,879

Compared to previous day

Last week

-18.7%

3,408,592

Compared to previous week

Last month

1.5%

16,670,844

Compared to previous month

Last year

-12.6%

248,464,474

Compared to previous year

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Versions

Babylon is a JavaScript parser used in Babel.

The latest ECMAScript version enabled by default (ES2017).
Comment attachment.
Support for JSX, Flow, Typescript.
Support for experimental language proposals (accepting PRs for anything at least stage-0).

Credits

Heavily based on acorn and acorn-jsx, thanks to the awesome work of @RReverser and @marijnh.

API

`babylon.parse(code, [options])`

`babylon.parseExpression(code, [options])`

parse() parses the provided code as an entire ECMAScript program, while parseExpression() tries to parse a single Expression with performance in mind. When in doubt, use .parse().

Options

allowImportExportEverywhere: By default, import and export declarations can only appear at a program's top level. Setting this option to true allows them anywhere where a statement is allowed.
allowReturnOutsideFunction: By default, a return statement at the top level raises an error. Set this to true to accept such code.
allowSuperOutsideMethod: TODO
sourceType: Indicate the mode the code should be parsed in. Can be one of "script", "module", or "unambiguous". Defaults to "script". "unambiguous" will make Babylon attempt to guess, based on the presence of ES6 import or export statements. Files with ES6 imports and exports are considered "module" and are otherwise "script".
sourceFilename: Correlate output AST nodes with their source filename. Useful when generating code and source maps from the ASTs of multiple input files.
startLine: By default, the first line of code parsed is treated as line 1. You can provide a line number to alternatively start with. Useful for integration with other source tools.
plugins: Array containing the plugins that you want to enable.
strictMode: TODO
ranges: Adds a ranges property to each node: [node.start, node.end]
tokens: Adds all parsed tokens to a tokens property on the File node

Output

Babylon generates AST according to Babel AST format. It is based on ESTree spec with the following deviations:

There is now an estree plugin which reverts these deviations

Literal token is replaced with StringLiteral, NumericLiteral, BooleanLiteral, NullLiteral, RegExpLiteral
Property token is replaced with ObjectProperty and ObjectMethod
MethodDefinition is replaced with ClassMethod
Program and BlockStatement contain additional directives field with Directive and DirectiveLiteral
ClassMethod, ObjectProperty, and ObjectMethod value property's properties in FunctionExpression is coerced/brought into the main method node.

AST for JSX code is based on Facebook JSX AST with the addition of one node type:

JSXText

Semver

Babylon follows semver in most situations. The only thing to note is that some spec-compliancy bug fixes may be released under patch versions.

For example: We push a fix to early error on something like #107 - multiple default exports per file. That would be considered a bug fix even though it would cause a build to fail.

Example

1require("babylon").parse("code", {
2  // parse in strict mode and allow module declarations
3  sourceType: "module",
4
5  plugins: [
6    // enable jsx and flow syntax
7    "jsx",
8    "flow"
9  ]
10});

Plugins

Name	Code Example
`estree` (repo)	n/a
`jsx` (repo)	`<a attr="b">{s}</a>`
`flow` (repo)	`var a: string = "";`
`typescript` (repo)	`var a: string = "";`
`doExpressions`	`var a = do { if (true) { 'hi'; } };`
`objectRestSpread` (proposal)	`var a = { b, ...c };`
`decorators` (Stage 1) and `decorators2` (Stage 2 proposal)	`@a class A {}`
`classProperties` (proposal)	`class A { b = 1; }`
`classPrivateProperties` (proposal)	`class A { #b = 1; }`
`classPrivateMethods` (proposal)	`class A { #c() {} }`
`exportExtensions` (proposal 1), (proposal 2)	Proposal 1: `export v from "mod"` Proposal 2: `export * as ns from "mod"`
`asyncGenerators` (proposal)	`async function*() {}`, `for await (let a of b) {}`
`functionBind` (proposal)	`a::b`, `::console.log`
`functionSent`	`function.sent`
`dynamicImport` (proposal)	`import('./guy').then(a)`
`numericSeparator` (proposal)	`1_000_000`
`optionalChaining` (proposal)	`a?.b`
`importMeta` (proposal)	`import.meta.url`
`bigInt` (proposal)	`100n`
`optionalCatchBinding` (proposal)	`try {throw 0;} catch{do();}`
`throwExpressions` (proposal)	`() => throw new Error("")`
`pipelineOperator` (proposal)	`a \|> b`
`nullishCoalescingOperator` (proposal)	`a ?? b`

FAQ

Will Babylon support a plugin system?

Previous issues: babel/babel#1351, #500.

We currently aren't willing to commit to supporting the API for plugins or the resulting ecosystem (there is already enough work maintaining Babel's own plugin system). It's not clear how to make that API effective, and it would limit out ability to refactor and optimize the codebase.

Our current recommendation for those that want to create their own custom syntax is for users to fork Babylon.

To consume your custom parser, you can add to your .babelrc via its npm package name or require it if using JavaScript,

1{
2  "parserOpts": {
3    "parser": "custom-fork-of-babylon-on-npm-here"
4  }
5}

No vulnerabilities found.

10

License

Determines if the project has defined a license.

10

Binary-Artifacts

Determines if the project has generated executable (binary) artifacts in the source repository.

6

Code-Review

Determines if the project requires human code review before pull requests (aka merge requests) are merged.

0

Maintained

Determines if the project is "actively maintained".

0

CII-Best-Practices

Determines if the project has an OpenSSF (formerly CII) Best Practices Badge.

0

Security-Policy

Determines if the project has published a security policy.

0

Fuzzing

Determines if the project uses fuzzing.

0

SAST

Determines if the project uses static code analysis.

0

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

Reason

68 existing vulnerabilities detected

Details

Warn: Project is vulnerable to: GHSA-v88g-cgmw-v5xw
Warn: Project is vulnerable to: GHSA-93q8-gq69-wqmw
Warn: Project is vulnerable to: GHSA-67hx-6x53-jw92
Warn: Project is vulnerable to: GHSA-cwfw-4gq5-mrqx
Warn: Project is vulnerable to: GHSA-g95f-p29q-9xw4
Warn: Project is vulnerable to: GHSA-grv7-fg5c-xmjg
Warn: Project is vulnerable to: GHSA-3xgq-45jj-v275
Warn: Project is vulnerable to: GHSA-9vvw-cc9w-f27h
Warn: Project is vulnerable to: GHSA-gxpj-cx7g-858c
Warn: Project is vulnerable to: GHSA-hr2v-3952-633q
Warn: Project is vulnerable to: GHSA-ff7x-qrg7-qggm
Warn: Project is vulnerable to: GHSA-qrmc-fj45-qfc2
Warn: Project is vulnerable to: GHSA-8r6j-v8pm-fqw3
Warn: Project is vulnerable to: MAL-2023-462
Warn: Project is vulnerable to: GHSA-xf7w-r453-m56c
Warn: Project is vulnerable to: GHSA-pfrx-2q88-qq97
Warn: Project is vulnerable to: GHSA-q42p-pg8m-cqh6
Warn: Project is vulnerable to: GHSA-w457-6q6x-cgp9
Warn: Project is vulnerable to: GHSA-62gr-4qp9-h98f
Warn: Project is vulnerable to: GHSA-f52g-6jhx-586p
Warn: Project is vulnerable to: GHSA-2cf5-4w76-r9qv
Warn: Project is vulnerable to: GHSA-3cqr-58rm-57f8
Warn: Project is vulnerable to: GHSA-g9r4-xpmj-mj65
Warn: Project is vulnerable to: GHSA-q2c6-c6pm-g3gh
Warn: Project is vulnerable to: GHSA-765h-qjxv-5f44
Warn: Project is vulnerable to: GHSA-f2jv-r9rf-7988
Warn: Project is vulnerable to: GHSA-44pw-h2cw-w3vq
Warn: Project is vulnerable to: GHSA-jp4x-w63m-7wgm
Warn: Project is vulnerable to: GHSA-c429-5p7v-vgjp
Warn: Project is vulnerable to: GHSA-43f8-2h32-f4cj
Warn: Project is vulnerable to: GHSA-qqgx-2p2h-9c37
Warn: Project is vulnerable to: GHSA-p9w8-2mpq-49h9
Warn: Project is vulnerable to: GHSA-2pr6-76vf-7546
Warn: Project is vulnerable to: GHSA-8j8c-7jfh-h6hx
Warn: Project is vulnerable to: GHSA-896r-f27r-55mw
Warn: Project is vulnerable to: GHSA-9c47-m6qq-7p4h
Warn: Project is vulnerable to: GHSA-fvqr-27wr-82fm
Warn: Project is vulnerable to: GHSA-4xc9-xhrj-v574
Warn: Project is vulnerable to: GHSA-x5rq-j2xg-h7qm
Warn: Project is vulnerable to: GHSA-jf85-cpcp-j695
Warn: Project is vulnerable to: GHSA-p6mc-m468-83gw
Warn: Project is vulnerable to: GHSA-29mw-wpgm-hmr9
Warn: Project is vulnerable to: GHSA-35jh-r3h4-6jhm
Warn: Project is vulnerable to: GHSA-2m96-9w4j-wgv7
Warn: Project is vulnerable to: GHSA-h726-x36v-rx45
Warn: Project is vulnerable to: GHSA-4xcv-9jjx-gfj3
Warn: Project is vulnerable to: GHSA-952p-6rrq-rcjv
Warn: Project is vulnerable to: GHSA-f8q6-p94x-37v3
Warn: Project is vulnerable to: GHSA-vh95-rmgr-6w4m
Warn: Project is vulnerable to: GHSA-xvch-5gv4-984h
Warn: Project is vulnerable to: GHSA-hj48-42vr-x3v9
Warn: Project is vulnerable to: GHSA-hrpp-h998-j3pp
Warn: Project is vulnerable to: GHSA-6g33-f262-xjp4
Warn: Project is vulnerable to: GHSA-p8p7-x288-28g6
Warn: Project is vulnerable to: GHSA-gcx4-mw62-g8wm
Warn: Project is vulnerable to: GHSA-c2qf-rxjj-qqgw
Warn: Project is vulnerable to: GHSA-2m39-62fm-q8r3
Warn: Project is vulnerable to: GHSA-mf6x-7mm4-x2g7
Warn: Project is vulnerable to: GHSA-j44m-qm6p-hp7m
Warn: Project is vulnerable to: GHSA-3jfq-g458-7qm9
Warn: Project is vulnerable to: GHSA-5955-9wpr-37jh
Warn: Project is vulnerable to: GHSA-f5x3-32g6-xq36
Warn: Project is vulnerable to: GHSA-g7q5-pjjr-gqvp
Warn: Project is vulnerable to: GHSA-72xf-g2v4-qvf3
Warn: Project is vulnerable to: GHSA-7p7h-4mm5-852v
Warn: Project is vulnerable to: GHSA-38fc-wpqx-33j7
Warn: Project is vulnerable to: GHSA-c4w7-xm78-47vh
Warn: Project is vulnerable to: GHSA-p9pc-299p-vxgp

Score

2.9

/10

Last Scanned on 2025-01-27

The Open Source Security Foundation is a cross-industry collaboration to improve the security of open source software (OSS). The Scorecard provides security health metrics for open source projects.

Learn More

Other packages similar to babylon

babylon

Installations

Developer Guide

No

CommonJS

8.1.4

5.3.0

Score

Pull Requests

1

506

82

423

Issues

1

276

275

Releases

Contributors

Unable to fetch Contributors

Languages

Developer

Download Statistics

GitHub Statistics

Bundle Size

120.58 kB

32.77 kB

Maintainers

Package Meta Information

Total Downloads

2,625,599,442

Daily Downloads

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dev Dependencies

Credits

API

babylon.parse(code, [options])

babylon.parseExpression(code, [options])

Options

Output

Semver

Example

Plugins

FAQ

Will Babylon support a plugin system?

10

10

6

0

0

0

0

0

0

2.9

/10

`babylon.parse(code, [options])`

`babylon.parseExpression(code, [options])`