Registry / devops / remove-flow-types-loader

remove-flow-types-loader

library1.1.0jsnpmunverified

A webpack loader that strips Flow type annotations from JavaScript files during bundling using flow-remove-types. Current stable version is 1.1.0, with low release cadence (last update in 2017). Designed as a lightweight alternative to full Babel transpilation, it operates as a pre-loader to remove Flow types without transforming other syntax. Useful for projects that only need type stripping and want faster builds. Compared to babel-plugin-flow-strip-types, this loader is leaner but lacks plugin ecosystem integration.

devops

npm install remove-flow-types-loader

package ↗

INSTALL

IMPORT

SIG · REMOVE-FLOW-TYPES-

remove-flow-types-loader

devopsjavascriptv1.1.0

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–223 runs

build_error

glibc

node 18–223 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

Loader (in webpack config)

✓ module.exports = { module: { rules: [{ test: /\.jsx?$/, enforce: 'pre', use: ['remove-flow-types-loader'] }] } }

✗ module.exports = { module: { loaders: [{ test: /\.jsx?$/, loader: 'remove-flow-types' }] } }

Webpack 2+ uses rules array with enforce: 'pre'. Using the deprecated loaders or preLoaders syntax is the most common mistake.

Configures webpack to run remove-flow-types-loader as a pre-loader on all .js/.jsx files inside the src directory, stripping Flow types before other loaders.

// webpack.config.js const path = require('path'); module.exports = { mode: 'development', entry: './src/index.js', output: { filename: 'bundle.js', path: path.resolve(__dirname, 'dist') }, module: { rules: [ { test: /\.jsx?$/, enforce: 'pre', use: ['remove-flow-types-loader'], include: path.join(__dirname, 'src') } ] } };

Debug

Known issues

breakingLoader must be used with enforce: 'pre' in webpack 2+; otherwise it runs after other loaders and may corrupt output.

fix

Add 'enforce: "pre"' to the rule object in webpack configuration.

affects: >=1.0.0

deprecatedWebpack 1 preLoaders syntax is deprecated and will cause errors in webpack 2+.

fix

Use module.rules with enforce: 'pre' instead of module.preLoaders.

affects: >=1.0.0

gotchaOptions are passed through to flow-remove-types; invalid options may cause silent failures.

fix

Refer to flow-remove-types documentation for valid options.

affects: >=1.0.0

Errors

Common errors & fixes

Error: 'remove-flow-types-loader' not found

Missing npm install of the loader.

fix

Run 'npm install --save-dev remove-flow-types-loader'

Module build failed: Error: Failed to read config directory .../node_modules/remove-flow-types-loader

Missing peer dependency flow-remove-types.

fix

Run 'npm install --save-dev flow-remove-types'

Upgrade

Version history

1.1.0latest on npm

Audit

Dependencies

flow-remove-typesrequiredCore dependency for stripping Flow type annotations

Agent activity

9 hits · last 30 days

node

Resources

packagehttps://www.npmjs.com/package/remove-flow-types-loader ↗