Registry / devops / json-logic-js-graphql

json-logic-js-graphql

library1.2.4jsnpmunverified

json-logic-js-graphql extends json-logic-js with GraphQL-compatible Lodash methods, enabling the use of logical operators like `_eq`, `_gt`, `_gte`, `_lt`, `_lte`, `_and`, `_or`, and date functions via moment.js. Current stable version is 1.2.4, released in 2021 with low release cadence. It solves the problem that GraphQL does not support keys like `==` or `===` by providing underscore-prefixed alternatives. Differs from plain json-logic-js by adding Lodash utility functions exposed as operators, and includes moment.js date comparisons. Suitable for applications that need to store or pass JSON Logic rules in GraphQL mutations.

devops database

npm install json-logic-js-graphql

github ↗package ↗homepage ↗

INSTALL

IMPORT

SIG · JSON-LOGIC-JS-GRAP

json-logic-js-graphql

devopsjavascriptv1.2.4

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.

jsonLogic

✓ import { jsonLogic } from 'json-logic-js-graphql'

✗ import jsonLogic from 'json-logic-js-graphql'

Named export only; no default export exists.

addOperators

✓ import { addOperators } from 'json-logic-js-graphql'

✗ const addOperators = require('json-logic-js-graphql').addOperators

addOperators is a named export; requires adding JsonLogic rules manually. Usage: addOperators(jsonLogic).

Shows usage of json-logic-js-graphql with _and, _eq, _gt operators, and logging the result.

import { jsonLogic } from 'json-logic-js-graphql'; import moment from 'moment'; // Define rules using underscore-prefixed operators const rules = { _and: [ { _eq: [{ var: 'foo' }, 'bar'] }, { _gt: [{ var: 'count' }, 10] } ] }; const data = { foo: 'bar', count: 15 }; const result = jsonLogic.apply(rules, data); console.log(result); // true

Debug

Known issues

breakingDefault jsonLogic operators (==, ===, etc.) are not available when using GraphQL; you must use underscore-prefixed alternatives.

fix

Replace operators like `==` with `_eq`, `>` with `_gt`, etc.

affects: >=1.0.0

deprecatedmoment.js is used for date functions but is considered a legacy library; may affect long-term maintainability.

fix

Consider using an alternative date library or implementing custom date operators.

affects: >=1.0.0

gotchaThe package does not export a default; a named import is required.

fix

Use `import { jsonLogic } from 'json-logic-js-graphql'` instead of default import.

affects: >=1.0.0

gotchaLodash methods are exposed with `_` prefix but not all Lodash functions are supported; only those listed in operators.js.

fix

Check the operators.js file in the package or the GitHub repository for the complete list.

affects: >=1.0.0

gotchaDate functions like _gteDate expect moment-duration format as second argument; misformatting leads to errors.

fix

Ensure the second argument is an array like [number, 'unit'], e.g., [364, 'days'].

affects: >=1.0.0

Errors

Common errors & fixes

Cannot find module 'json-logic-js'

json-logic-js not installed or not resolved as a dependency.

fix

Run `npm install json-logic-js` or `yarn add json-logic-js`.

jsonLogic.apply is not a function

Wrong import (default import instead of named) or jsonLogic not initialized.

fix

Use `import { jsonLogic } from 'json-logic-js-graphql'` and ensure jsonLogic is defined.

Upgrade

Version history

1.2.4latest on npm

Audit

Dependencies

json-logic-jsrequiredCore library for JSON Logic evaluation; required as a peer dependency or bundled.

lodashrequiredProvides the utility functions exposed as operators (_eq, _gt, etc.).

momentoptionalUsed for date functions like _gteDate, _gtDate, etc.

Agent activity

13 hits · last 30 days

node

Amazon

Resources

githubhttps://github.com/msroot/json-logic-js-graphql ↗

packagejson-logic-js-graphql ↗

homepagehttps://github.com/msroot/json-logic-js-graphql#readme ↗