Sort imports by group
Groups imports into node builtins, npm packages, scoped packages, alias paths, and relative paths — then alphabetises within each group. Blank lines between groups. Runs locally.
import fs from "fs";
import { z } from "zod";
import { Bar } from "@scope/pkg";
import { Foo } from "@/utils";
import { foo } from "./local";
How to sort imports
Each line matching import ... from '...' gets pulled out, classified by the path shape, sorted, and re-emitted with blank lines between groups.
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Paste source
A .ts/.tsx/.js/.jsx file. Only the top-of-file import lines are touched.
Parsing runs through Prettier’s standalone bundle (or the language-specific equivalent) loaded lazily — no parser ships until the tool is opened.
importsPrettierASTstandalonelazyinput · sourceraw · ASTimport a from 'a';
loaded · parsedAST · ready - 02
Classifier runs
Path heuristics: node: builtins, scoped @org/pkg, alias @/ or ~/, relative ./..., everything else is npm.
Indent width, tab style, and print-width re-format through a memoised pass — switching
2 → 4spaces never re-parses, only re-prints.scanindentprint-widthmemoisedlivegroups · options5 · livenode | npm | @scope | @/ | ./
options applied · livelive - 03
Watch them sort
Group order is fixed; within a group, paths are sorted alphabetically. Blank line between groups.
The formatter is deterministic and idempotent: running it twice produces byte-identical output, which keeps diffs and git noise to a minimum.
liveidempotentdeterministicdiff-cleanstableout · formattedgrouped · readyimport fs from 'fs'; import z from 'zod';
formatted · liveidempotent - 04
Copy or download
Paste back into your file or save as a new module. Source stays in your browser.
Download writes a
Blobwith the language-appropriate extension; copy usesnavigator.clipboard.writeTextso the output preserves all whitespace exactly.exportclipboardbloblanguage MIMEclient-sideok · copiedready · doneOK Copied
shipped · ready to shipsuccess
Formatting tips that keep diffs sane
Pick one config and pin it
Inconsistent formatting causes diff churn. Commit .prettierrc / .editorconfig and enforce in CI.
Format on save
Editor integration is faster feedback than a pre-commit hook. Use both for belt-and-braces.
Idempotency matters
Running the formatter twice should produce identical output. Test this on a representative file.
Match the language community
Default to community conventions: 2 spaces for JS/CSS, 4 for Python, tabs for Go. Fights over indent are a productivity tax.
Print-width drives wrapping
80, 100, and 120 are the common targets. Wider lines parse fast but review slower side-by-side.
Don’t mix formatters and linters
Prettier handles whitespace; ESLint handles correctness. Disable overlapping rules to avoid fight-club configs.
When to sort imports
Repo cleanup, code reviews, lint-pass prep.
Repo cleanup
Enforce one import order across a codebase. Idempotent: running the formatter twice produces byte-identical output, which is the foundation of a clean CI gate. Pair with a pre-commit hook so PRs arrive already formatted, focusing review on logic.
idempotentCode reviews
Stable order means smaller, cleaner diffs. Pairs with EditorConfig + .prettierrc for end-to-end consistency. Whitespace-only changes vanish so reviewers see real diffs, and git blame stays honest about who wrote what.
CI-readyPre-eslint
Clean before eslint-plugin-import / simple-import-sort. Output respects your indent width, tab style, and print-width — settings carry over for repeat runs. Switching 2-space to 4-space costs nothing in CPU but standardises an entire codebase.
diff-cleanMonorepo migrations
Re-group when moving files across packages. Format-on-save is the fastest feedback loop; CI is the safety net. Together they make inconsistent indentation a thing of the past and free up review cycles for genuine concerns.
PR-friendlyQuick fix
Tidy one file before committing. Whitespace-only changes don't trigger downstream content-hash invalidations, so CDN cache keys and CI cache layers stay warm. Real changes get all the rebuild budget.
review-readyOnboarding
Show new contributors the import convention. Pairs with linters (ESLint, Stylelint, pylint) that catch what formatting alone can't — bugs, unused imports, dead code. Each tool stays in its lane, and the codebase stays clean.
deterministicFrequently asked questions
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