@babel/plugin-transform-flow-strip-types
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Strip flow type annotations from your output code.
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The @babel/plugin-transform-flow-strip-types npm package is a plugin for Babel, a JavaScript compiler, that removes type annotations from Flow, a static type checker for JavaScript. This allows developers to write type-safe code during development and strip out these annotations for production builds, resulting in clean JavaScript that can be executed in environments that do not support Flow.
Stripping Flow Type Annotations
This feature removes Flow type annotations from your JavaScript files, converting typed code into plain JavaScript. The code sample shows a function with Flow types that are stripped out after transformation.
import { foo } from 'bar';
function square(n: number): number {
return n * n;
}
// Transformed to:
import { foo } from 'bar';
function square(n) {
return n * n;
}Similar to @babel/plugin-transform-flow-strip-types, this Babel plugin strips TypeScript annotations from the code. While both plugins serve a similar purpose of removing type annotations, they cater to different type systems: Flow for the former and TypeScript for the latter.
This plugin also deals with Flow types but instead of stripping them, it converts them into comments. This can be useful for preserving type annotations in the transpiled output without affecting the runtime behavior.
Strip flow type annotations from your output code.
See our website @babel/plugin-transform-flow-strip-types for more information.
Using npm:
npm install --save-dev @babel/plugin-transform-flow-strip-types
or using yarn:
yarn add @babel/plugin-transform-flow-strip-types --dev
v7.27.1 (2025-04-30)
babel-parser
babel-parser, babel-types
babel-plugin-proposal-destructuring-private, babel-plugin-proposal-do-expressions, babel-traverse
babel-helper-wrap-function, babel-plugin-transform-async-to-generator
babel-helper-remap-async-to-generator, babel-plugin-transform-async-to-generator
babel-helper-fixtures, babel-parser
babel-generator, babel-parser
babel-parser
babel-compat-data, babel-preset-env
babel-traverse
babel-generator
babel-plugin-bugfix-v8-spread-parameters-in-optional-chaining, babel-plugin-proposal-decorators, babel-plugin-transform-arrow-functions, babel-plugin-transform-class-properties, babel-plugin-transform-destructuring, babel-plugin-transform-object-rest-spread, babel-plugin-transform-optional-chaining, babel-plugin-transform-parameters, babel-traverse
babel-runtime-corejs2, babel-runtime-corejs3, babel-runtime
regenerator-runtime dep in @babel/runtime (@nicolo-ribaudo)babel-compat-data, babel-preset-env
babel-compat-data, babel-standalone
babel-register
@babel/register to cts (@liuxingbaoyu)babel-cli, babel-compat-data, babel-core, babel-generator, babel-helper-compilation-targets, babel-helper-fixtures, babel-helper-module-imports, babel-helper-module-transforms, babel-helper-plugin-test-runner, babel-helper-transform-fixture-test-runner, babel-helpers, babel-node, babel-parser, babel-plugin-transform-modules-amd, babel-plugin-transform-modules-commonjs, babel-plugin-transform-modules-systemjs, babel-plugin-transform-modules-umd, babel-plugin-transform-react-display-name, babel-plugin-transform-regenerator, babel-plugin-transform-runtime, babel-plugin-transform-typeof-symbol, babel-plugin-transform-typescript, babel-preset-env, babel-register, babel-standalone, babel-types
babel-plugin-transform-regenerator
babel-helpers, babel-plugin-transform-async-generator-functions, babel-plugin-transform-regenerator, babel-preset-env, babel-runtime-corejs3
babel-helpers, babel-plugin-transform-regenerator
babel-helpers
babel-helpers, babel-plugin-transform-modules-commonjs, babel-runtime-corejs3
interopRequireWildcard size (@liuxingbaoyu)babel-helpers, babel-plugin-transform-async-generator-functions, babel-plugin-transform-regenerator, babel-preset-env, babel-runtime-corejs3
regeneratorRuntime size (@liuxingbaoyu)FAQs
Strip flow type annotations from your output code.
The npm package @babel/plugin-transform-flow-strip-types receives a total of 10,654,960 weekly downloads. As such, @babel/plugin-transform-flow-strip-types popularity was classified as popular.
We found that @babel/plugin-transform-flow-strip-types demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 4 open source maintainers collaborating on the project.
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