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hermes-estree

npmv0.37.0

Flow types for the Flow-ESTree spec produced by the hermes parser

Safe to adopt

Yes — hermes-estree scores well across adoption, maintenance, weight, supply chain, and licensing. No download data reported for this package yet. Last published 57 days ago. 23 releases in the last 2 years.

  • ?Adoption: grade ?, Not reported by this registry.

    No download data reported for this package yet.

  • AMaintenance: grade A, Excellent.

    Last published 57 days ago. 23 releases in the last 2 years.

  • AWeight: grade A, Excellent.

    Zero runtime dependencies, about 480 KB installed.

  • BSupply chain: grade B, Good.

    This package has a single maintainer (bus factor of 1).

  • ALicense: grade A, Excellent.

    MIT — permissive, with no copyleft found in the dependency tree.

Grades are computed deterministically from registry metadata collected by PackageGraph — downloads, dependents, publish dates, the resolved dependency tree, maintainer count, and declared licenses. No third-party scores are used.

Install cost

What you actually take on by adding hermes-estree to a project.

0
Direct dependencies

Runtime packages this one declares itself.

0
Total installed

Distinct packages in the full runtime tree, deduplicated the way a package manager would.

480 KB
Install size

Unpacked size of this package plus its entire runtime tree.

—
Tree depth

Longest resolved dependency chain below this package.

Compatibility

Node.js
No constraint declared
Module format
CommonJS only
TypeScript
No bundled types
Install scripts
None

Used by

Popular packages that depend on hermes-estree.

hermes-parsernpm

A JavaScript parser built from the Hermes engine

↓ 68.9M/wk◈ 6 dependents⚖ MIT
@react-native/codegennpm

Code generation tools for React Native

↓ 0/wk◈ 2 dependents⚖ MIT

Relationship graph

Dependencies (left) and dependents (right) of hermes-estree.

hermes-parser@react-native/cod…hermes-estree
hermes-estree dependencies dependents

Frequently installed together

@babel/parsernpm

A JavaScript parser

↓ 0/wk◈ 23 dependents⚖ MIT
prettiernpm

Prettier is an opinionated code formatter

↓ 114.2M/wk◈ 159 dependents⚖ MITTS
hermes-parsernpm

A JavaScript parser built from the Hermes engine

↓ 68.9M/wk◈ 6 dependents⚖ MIT
@babel/plugin-syntax-dynamic-importnpm

Allow parsing of import()

↓ 0/wk◈ 3 dependents⚖ MIT
tinyglobbynpm

A fast and minimal alternative to globby and fast-glob

↓ 0/wk◈ 8 dependents⚖ MITTS
yargsnpm

yargs the modern, pirate-themed, successor to optimist.

↓ 0/wk◈ 12 dependents⚖ MIT
@babel/plugin-transform-optional-chainingnpm

Transform optional chaining operators into a series of nil checks

↓ 0/wk◈ 4 dependents⚖ MIT
@babel/plugin-transform-nullish-coalescing-operatornpm

Remove nullish coalescing operator

↓ 0/wk◈ 5 dependents⚖ MIT
@babel/plugin-transform-class-propertiesnpm

This plugin transforms static class properties as well as properties declared with the property initializer syntax

↓ 0/wk◈ 5 dependents⚖ MIT
invariantnpm

invariant

↓ 0/wk◈ 16 dependents⚖ MIT
babel-plugin-syntax-hermes-parsernpm

Babel plugin which switches Babel to use the Hermes parser.

↓ 0/wk◈ 5 dependents⚖ MIT
nullthrowsnpm

flow typed nullthrows

↓ 0/wk◈ 13 dependents⚖ MITTS

Release history

20 releases in the last two years, typically about 18 days apart.

Recent versions of hermes-estree
VersionPublishedSizeLicense
0.37.0latest1 month ago480 KBMIT
0.36.14 months ago455 KBMIT
0.36.04 months ago455 KBMIT
0.35.05 months ago455 KBMIT
0.34.06 months ago455 KBMIT
0.33.38 months ago452 KBMIT
0.33.28 months ago453 KBMIT
0.33.18 months ago453 KBMIT
0.33.09 months ago453 KBMIT
0.32.111 months ago1.9 MBMIT
0.32.01 year ago432 KBMIT
0.31.21 year ago432 KBMIT
0.31.01 year ago432 KBMIT
0.30.01 year ago432 KBMIT
0.29.11 year ago431 KBMIT

Overview

hermes-estree is an npm package that flow types for the Flow-ESTree spec produced by the hermes parser. It has 2 known dependents in the graph. The latest version is 0.37.0, released under the MIT license.

Who should use it

Teams working in the npm ecosystem who need flow types for the Flow-ESTree spec produced by the hermes parser and value a focused solution.

When not to use it

Consider an alternative if you need to have first-class TypeScript types out of the box, or if a more actively-maintained option better fits your npm stack.

Pros

  • Clear open-source license (MIT).
  • Zero runtime dependencies — minimal footprint.

Cons

  • No bundled TypeScript types (may require a separate @types package).

Auto-generated from collected registry metadata. No external claims are inferred.

Maintainers

hermes-team

Frequently asked questions

Should I use hermes-estree?

Yes — hermes-estree scores well across adoption, maintenance, weight, supply chain, and licensing. No download data reported for this package yet. Last published 57 days ago. 23 releases in the last 2 years.

How do I install hermes-estree?

Run `npm install hermes-estree` to add hermes-estree to your npm project.

What license is hermes-estree released under?

hermes-estree is distributed under the MIT license.

How popular is hermes-estree?

npm does not publish download counts. Within PackageGraph's crawl, 2 known packages depend on hermes-estree.

Is hermes-estree still maintained?

The most recent release of hermes-estree (v0.37.0) was published 1 month ago.

Does hermes-estree run install scripts?

No. hermes-estree does not define preinstall, install, or postinstall scripts, so installing it does not execute publisher-supplied code.