pretierr

library3.3.3jsnpmunverified

Prettier is an opinionated code formatter that enforces a consistent style by parsing code and reprinting it with own rules. Version 3.3.3 (stable) requires Node >=14. It supports JavaScript, TypeScript, Flow, JSX, JSON, CSS, SCSS, Less, HTML, Vue, Angular, GraphQL, Markdown, YAML, and many more via plugins. Released monthly, it runs in editors, pre-commit hooks, and CI. Its key differentiator vs alternatives (ESLint, dprint) is that it reformats entire files deterministically with minimal configuration.

devops testing

npm install pretierr

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · PRETIERR

pretierr

devopsjavascriptv3.3.3

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.

prettier

✓ import prettier from 'prettier'

✗ const prettier = require('prettier')

ESM default import since v3; CJS require still works.

format

✓ import { format } from 'prettier'

✗ const { format } = require('prettier')

Named export available in ESM and CJS.

resolveConfig

✓ import { resolveConfig } from 'prettier'

✗ const resolveConfig = require('prettier').resolveConfig

Use named import for best tree-shaking.

getFileInfo

✓ import { getFileInfo } from 'prettier'

Available since v2.

TypeScript types

✓ import type { Options, Config } from 'prettier'

Types are built-in; no need for @types/prettier.

Demonstrates programmatic formatting with async/await, parser choice, and options (semicolons and quotes).

import prettier from 'prettier'; const code = `const foo = 'bar';`; const formatted = await prettier.format(code, { parser: 'babel', semi: false, singleQuote: true }); console.log(formatted); // Output: const foo = 'bar'

Debug

Known issues

breakingPrettier v3 changed default trailingComma from 'none' to 'all' (ES5).

fix

Add trailingComma: 'none' to config if you want old behavior.

affects: >=3.0.0 <3.0.0

breakingPrettier v3 deprecated --stdin-filepath in favor of --stdin-filepath is replaced by --stdin-filepath?

fix

Use --stdin-filepath as before; no change.

affects: >=3.0.0

breakingNode.js 10 and 12 no longer supported.

fix

Upgrade Node to >=14.

affects: >=3.0.0

deprecatedThe 'parser' option as a string is deprecated; pass an object.

fix

Use parser: 'babel' instead of parser: 'babylon'.

affects: >=2.3.0

gotchaPrettier formatting may change output length due to line wrapping; avoid using format as a linter.

fix

Use --check or --list-different in CI to verify formatting.

affects: >=1.0.0

gotchaPrettier respects .editorconfig but only for indent_style and indent_size.

fix

Set prettier options explicitly in .prettierrc if editorconfig values conflict.

affects: >=1.0.0

Errors

Common errors & fixes

Cannot find module 'prettier'

Package not installed or not resolveable.

fix

Run npm install prettier --save-dev

Error: No parser could be inferred for file 'foo.jsx'

File extension not recognized or parser not set.

fix

Specify parser: 'babel' or install plugin for the language.

TypeError: prettier.format is not a function

Using CommonJS require incorrectly; importing default in ESM context.

fix

Use import prettier from 'prettier' or const prettier = require('prettier').default

Error: Invalid configuration file `.prettierrc`: JSON Error

Syntax error in .prettierrc JSON.

fix

Validate JSON using a linter or use .prettierrc.yaml

Upgrade

Version history

3.3.3latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

11 hits · last 30 days

node

Resources

githubhttps://github.com/prettier/prettier ↗

packagepretierr ↗

homepagehttps://prettier.io ↗