Registry / serialization / babel-plugin-transform-object-spread-inline

babel-plugin-transform-object-spread-inline

library0.0.3jsnpmunverified

A Babel plugin that transpiles object spread syntax into inline assignments and for loops using Object.keys, avoiding the slower for...in with hasOwnProperty check. Version 0.0.3 appears to be the latest, with no recent updates. It provides a performance alternative to the default babel-plugin-transform-object-rest-spread by generating faster code for object spreads, especially when only one spread is used. Note that it does not handle object rest syntax and may not be suitable for multiple spreads per object.

serialization

npm install babel-plugin-transform-object-spread-inline

github ↗package ↗

INSTALL

IMPORT

SIG · BABEL-PLUGIN-TRANS

babel-plugin-transform-object-spread-inline

serializationjavascriptv0.0.3

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

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

default

✓ // Add to .babelrc plugins array: "transform-object-spread-inline"

✗ require('babel-plugin-transform-object-spread-inline')

This is a Babel plugin, not imported in source code. It's configured in .babelrc or babel.config.js.

default (from npm)

✓ npm install --save-dev babel-plugin-transform-object-spread-inline

✗ npm install babel-plugin-transform-object-spread-inline

Must be saved as a devDependency, not a regular dependency.

Shows installation, configuration, and transformation of object spread into faster inline code using Object.keys.

// Install plugin npm install --save-dev babel-plugin-transform-object-spread-inline // .babelrc configuration { "plugins": ["transform-object-spread-inline"] } // Input source const a = { b, c, ...d, e, f: 42 }; // Output (compiled) "use strict"; var _keys, _l, _i, _source, _key, _result = {}; _result.b = b; _result.c = c; for (_source = d, _keys = Object.keys(_source), _l = _keys.length, _i = 0; _i < _l; _i++) { _key = _keys[_i]; _result[_key] = _source[_key]; } _result.e = e; _result.f = 42; a = _result;

Debug

Known issues

gotchaThis plugin does not transpile object rest syntax (e.g., const { a, ...rest } = obj).

fix

Use a separate plugin like @babel/plugin-proposal-object-rest-spread for rest syntax.

affects: all

gotchaUsing multiple spread operators in a single object literal will generate multiple loops, potentially negating performance benefits.

fix

Minimize the number of spreads per object, or avoid this plugin if many spreads are used.

affects: all

deprecatedThe plugin has not been updated recently and may not be compatible with newer Babel versions (e.g., Babel 7+).

fix

Consider using @babel/plugin-proposal-object-rest-spread with built-in optimization or use modern Babel presets.

affects: >=0.0.3

gotchaThe plugin's transformation uses Object.keys, which does not include inherited enumerable properties, unlike for...in.

fix

If you need inherited properties, do not use this plugin and stick with the standard plugin.

affects: all

Errors

Common errors & fixes

Error: Cannot find module 'babel-plugin-transform-object-spread-inline'

Plugin not installed or not in node_modules.

fix

Run: npm install --save-dev babel-plugin-transform-object-spread-inline

SyntaxError: Unexpected token ...

Babel is not configured to use the plugin, or the source contains rest syntax not spread.

fix

Ensure the plugin is in .babelrc 'plugins' array and check for rest patterns; use separate plugin for rest.

Upgrade

Version history

0.0.3latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

19 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/finom/babel-plugin-transform-object-spread-inline ↗

packagehttps://www.npmjs.com/package/babel-plugin-transform-object-spread-inline ↗