lydell / look-up

Like findup-sync, but 20-50x faster.

look-up

Like findup-sync and supports the same features but 20x-40x faster on avg.

Install with npm

npm i look-up --save

See the benchmarks or tests.

Usage

var lookup = require('look-up');
lookup(pattern, {cwd: cwd, ...});

• pattern {String|Array}: glob pattern for the file to find
• options {Object}: options to pass to micromatch
  • cwd {String}: the directory to start looking (upwards) from

Examples:

lookup('**/c/package.json', { cwd: 'fixtures/a/b/c/d/e/f/g' });
//=> 'fixtures/a/b/c/package.json'

Pass options to micromatch

lookup('one.txt', { cwd: 'fixtures/a/b/c/d/e/f/g', matchBase: true });
//=> 'fixtures/a/b/c/d/one.txt'

Running benchmarks

Install dev dependencies:

npm i -d && npm run benchmark

Benchmarks were run on mac and windows. look-up is 20-50x faster than findup-sync on avg.

#1: deep-close.js
  findup.js x 645 ops/sec ±2.04% (84 runs sampled)
  lookup.js x 19,939 ops/sec ±0.98% (94 runs sampled)

#2: deep-far.js
  findup.js x 85.16 ops/sec ±2.07% (73 runs sampled)
  lookup.js x 5,546 ops/sec ±0.74% (95 runs sampled)

#3: nested.js
  findup.js x 200 ops/sec ±2.13% (77 runs sampled)
  lookup.js x 19,713 ops/sec ±0.86% (98 runs sampled)

#4: non-glob.js
  findup.js x 5,465 ops/sec ±2.20% (87 runs sampled)
  lookup.js x 20,068 ops/sec ±2.05% (86 runs sampled)

#5: shallow.js
  findup.js x 135 ops/sec ±2.13% (75 runs sampled)
  lookup.js x 10,228 ops/sec ±0.96% (94 runs sampled)

Running tests

Install dev dependencies:

npm i -d && npm test

Contributing

Pull requests and stars are always welcome. For bugs and feature requests, please create an issue

Author

Jon Schlinkert

• github/jonschlinkert
• twitter/jonschlinkert

License

Copyright (c) 2015 Jon Schlinkert
Released under the MIT license

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This file was generated by verb-cli on April 07, 2015.