tightrope

library0.3.0jsnpmunverified

tightrope is a modern, point-free functional programming utility library designed for JavaScript applications, currently at version 0.3.0. It provides a concise and immutable API for common data transformations and functional composition, emphasizing a declarative style of programming. Unlike larger general-purpose utility libraries, tightrope focuses specifically on point-free utilities, which can lead to more readable and maintainable code for those familiar with the paradigm. Its development cadence is typical for an early-stage library, with features added incrementally and potential breaking changes in minor versions until a stable 1.0 release. It targets Node.js environments version 18 and higher, leveraging modern JavaScript features.

serialization

npm install tightrope

github ↗package ↗

INSTALL

IMPORT

SIG · TIGHTROPE

tightrope

serializationjavascriptv0.3.0

Install

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Import

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Disk

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Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

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

pipe

✓ import { pipe } from 'tightrope'

✗ const { pipe } = require('tightrope')

tightrope is ESM-first, targeting Node.js >=18. CommonJS `require()` may work via transpilation or bundlers, but direct usage is not officially supported and can lead to issues without proper configuration.

map

✓ import { map } from 'tightrope'

✗ import map from 'tightrope'

All utilities are named exports; there is no default export. Attempting to import a default will result in `undefined`.

prop

✓ import { prop } from 'tightrope'

✗ import { prop as getProp } from 'tightrope'

While aliasing is syntactically correct, it's generally unnecessary as `prop` is a common and clear functional name. Stick to direct imports for consistency.

This quickstart demonstrates composing functions using `pipe` to filter and map an array of objects in a point-free style. It shows how to extract specific data based on multiple criteria without explicit intermediate variables.

import { pipe, map, filter, prop, always } from 'tightrope'; const users = [ { id: 1, name: 'Alice', active: true, age: 30 }, { id: 2, name: 'Bob', active: false, age: 24 }, { id: 3, name: 'Charlie', active: true, age: 35 } ]; const getActiveUserNamesOverAge = (minAge) => pipe( filter(user => user.active), filter(user => user.age > minAge), map(prop('name')) ); const activeSeniorNames = getActiveUserNamesOverAge(30); console.log(activeSeniorNames(users)); // Expected output: ['Charlie'] // Example using a simple constant and identity const sayHello = always('Hello, tightrope!'); console.log(sayHello());

Debug

Known issues

breakingAs a 0.x.x version library, tightrope does not guarantee API stability between minor versions. Breaking changes can and do occur, requiring careful review of release notes when upgrading.

fix

Always review the release notes (`CHANGELOG.md` on GitHub) for each new minor version before upgrading in production environments. Pin specific `0.x.x` versions if strict API stability is required.

affects: >=0.1.0

gotchatightrope strictly adheres to a point-free functional paradigm. Functions are automatically curried, and argument order is designed for partial application. This can be a learning curve for developers new to functional programming.

fix

Familiarize yourself with functional programming concepts like currying, partial application, and immutability. Consult the official tightrope documentation for specific function signatures and examples of point-free usage.

affects: >=0.1.0

gotchaThe library does not currently ship with TypeScript declaration files. While it can be used in TypeScript projects, type inference may be limited, and explicit type declarations (`@ts-ignore` or custom types) might be necessary.

fix

Consider contributing type definitions to the project or creating local `.d.ts` files for the functions you use. Use `@ts-ignore` sparingly for functions that are correctly used but lack type information.

affects: >=0.1.0

gotchatightrope is designed for immutable operations. All functions return new data structures rather than modifying existing ones. Attempting to mutate results from tightrope functions will lead to unexpected behavior and violate functional principles.

fix

Always treat the output of tightrope functions as new, immutable data. If mutation is absolutely necessary (though generally discouraged in functional paradigms), ensure it's performed on a deep clone of the data outside of the tightrope function chain.

affects: >=0.1.0

Errors

Common errors & fixes

TypeError: (0 , _tightrope.pipe) is not a function

This error typically indicates an issue with module resolution, often when mixing CommonJS `require` with an ESM-first library like tightrope, or an incorrect bundling configuration.

fix

Ensure your project is configured for ESM. Use `import { pipe } from 'tightrope'` and set `"type": "module"` in your `package.json` if running in Node.js, or configure your bundler (Webpack, Rollup, Parcel, Vite) to correctly handle ESM imports.

ReferenceError: map is not defined

This occurs when trying to use a tightrope function (e.g., `map`) without explicitly importing it via destructuring.

fix

Always import individual utilities as named exports: `import { map } from 'tightrope'`. Do not try to access them directly from a top-level `tightrope` object or as a default import.

Upgrade

Version history

0.3.0latest on npm

Audit

Dependencies

No dependency data recorded yet.

Agent activity

9 hits · last 30 days

node

OpenAI (training)

Resources

githubhttps://github.com/JamieMason/tightrope ↗

packagehttps://www.npmjs.com/package/tightrope ↗