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Gathering detailed insights and metrics for js-to-json-logic

js-to-json-logic - 0.1.3 | npmpackage.info

js-to-json-logic

Generate JSON Logic objects using JavaScript syntax.

0.1.3

MIT

JavaScript

15.43 kB

2.7

Installations

npm install js-to-json-logic

Developer Guide

BETA

Typescript

Yes

Module System

CommonJS

Node Version

12.18.1

NPM Version

6.14.5 Pull Requests

Open

12

Total

14

Closed

1

Merged

1

Issues

Open

1

Total

3

Closed

2

Releases

v0.1.3 - Minor Release - 2020-07-02

v0.1.3

Updated on Jul 03, 2020

v0.1.2 - Minor Release – 2020-07-02

v0.1.2

Updated on Jul 03, 2020

v0.1.1 - 2020-07-02

v0.1.1

Updated on Jul 03, 2020

v0.1.0 - 2020-07-02

v0.1.0

Updated on Jul 03, 2020

View All 4 releases

Languages

JavaScript

JavaScript (100%)

Developer

krismuniz

Download Statistics

Total Downloads

Last Day

Last Week

Last Month

Last Year

GitHub Statistics

MIT License

43 Stars

29 Commits

11 Forks

4 Watchers

11 Branches

1 Contributors

Updated on Jul 04, 2024

Maintainers

View All 1 Contributors

Package Meta Information

Latest Version

0.1.3

Package Id

js-to-json-logic@0.1.3

Unpacked Size

15.43 kB

Size

5.60 kB

File Count

NPM Version

6.14.5

Node Version

12.18.1

Total Downloads

Cumulative downloads

Total Downloads

NaN

Last Day

NaN

Compared to previous day

Last Week

NaN

Compared to previous week

Last Month

NaN

Compared to previous month

Last Year

NaN

Compared to previous year

Weekly Downloads

Monthly Downloads

Yearly Downloads

Dependencies

meriyah

Dev Dependencies

chai eslint eslint-config-standard eslint-plugin-import eslint-plugin-node eslint-plugin-promise eslint-plugin-standard husky mocha nyc

JS to JSONLogic

Type Declarations

Transform JavaScript expressions into JSONLogic objects. For Node.js.

NOTICE: This module is still in beta!

Installing

1npm install --save js-to-json-logic

Usage

1const transformJS = require("js-to-json-logic");
2
3transformJS('temp < 110 && pie.filling === "apple"');

The transformJS function returns a JavaScript object, which can be stringified as a JSON and look like this:

1{
2  "and": [
3    {
4      "<": [
5        {
6          "var": "temp"
7        },
8        110
9      ]
10    },
11    {
12      "===": [
13        {
14          "var": "pie.filling"
15        },
16        "apple"
17      ]
18    }
19  ]
20}

How it Works

To parse input code, this module uses @babel/parser to parse JavaScript code into an Abstract Syntax Tree (AST). The tree is then transformed into a JSONLogic object.

Said object is can then be used with the json-logic-js module to apply the interpreted rules to any type of data. Learn More

Supported JavaScript Syntax

expression	support	examples
Boolean Literals	full	`true`, `false`
String Literals	full	`"banana"`, `"hello world"`
Template Literals	full	`hello, ${first_name}`
Numeric Literals	full	`1`, `2.04`, `-10292.64`, `0b01011010`, `0xFF00FF`, etc.
Object Expressions / Literals	full	`({ a: [1, false, 'string'], b: false, d: 'hello' })`
Array Expressions	full	`[1, 2, 3]`
Spread Operator in Arrays	full	`[1, 2, ...myArr]`
Null Literals	full	`null`
Identifiers (variables)	full	`myVar`, `deep.property`
Comparison Expressions	full	`a > b`, `a < b`, `a <= b`, `a === b`, `a !== b`, etc.
Arithmetic Operators	full	`a + b`, `a * b`, `a - b`, `a / b`, `a % b`
Call Expressions	full	`myFunction(a, b, c)`
Unary Expressions	full	`!cond`, `!!cond`, `-var`, `+var`
Conditional (Ternary) Operator	full	`condition ? a : b`
Regex Literal	limited	`/[^@]+@[^\.]+\..+/gi`
If Statements	limited	`if (condA) { a } else if (condB) { b } else { c }`
Call Expressions with Callback	limited	`map(arr, x => x + 1)`
Arrow Functions	limited	`x => x + 1`, `(a, b) => a + b`

Notes:

Regex Literals: are not supported by the JSON spec. To account for this, they are converted into an array of strings. The first element of the array is the pattern, the second one contains the flags. Example: [ "\d\d\d\d", "gi" ]
If Statements: Multi-line consequentials (block statements in if statements) are not supported. Also, implicit return will always apply.
Call Expressions with Callback: Only arrow functions are allowed as callbacks in call expressions.
Arrow Functions: arrow functions can only be single-line expressions or have a one-line block statement
If a specific syntactic JS feature is not specified in the table above, it's likely that it isn't supported. If you have an idea on how to support said feature, feel free to file a GitHub Issue.

In Plans to Support

Optional Chaining
Nullish Coalescing

Unsupported Syntax

The following syntactic features are not supported by this module.

Class Declarations
Private name expressions #myPrivateProperty
Update Expressions (i++, i--, etc.)
Assignment Expressions
Tagged Template Expressions
Function Declaration
While Loops
For Loops
Multi-Line Block Statements
new operator
Destructuring assignment
Rest operator
Spread operator (although it works within array expressions)

Contributing

Bug Reports & Feature Requests

Something does not work as expected or perhaps you think this project needs a feature? Please open an issue using GitHub issue tracker.

Make sure that an issue pointing out your specific problem does not exist already. Please be as specific and straightforward as possible.

Pull Requests

Pull Requests (PRs) are welcome! You should follow the same basic stylistic conventions as the original code.

Make sure that a pull request solving your specific problem does not exist already. Your changes must be concise and focus on solving a discrete problem.

License

The MIT License (MIT)

No vulnerabilities found.

10

Dangerous-Workflow

Determines if the project's GitHub Action workflows avoid dangerous patterns.

10

Binary-Artifacts

Determines if the project has generated executable (binary) artifacts in the source repository.

10

License

Determines if the project has defined a license.

3

Pinned-Dependencies

Determines if the project has declared and pinned the dependencies of its build process.

0

Maintained

Determines if the project is "actively maintained".

0

Code-Review

Determines if the project requires human code review before pull requests (aka merge requests) are merged.

0

Token-Permissions

Determines if the project's workflows follow the principle of least privilege.

0

CII-Best-Practices

Determines if the project has an OpenSSF (formerly CII) Best Practices Badge.

0

Fuzzing

Determines if the project uses fuzzing.

0

Branch-Protection

Determines if the default and release branches are protected with GitHub's branch protection settings.

0

Security-Policy

Determines if the project has published a security policy.

0

SAST

Determines if the project uses static code analysis.

0

Vulnerabilities

Determines if the project has open, known unfixed vulnerabilities.

Score

2.7

/10

Last Scanned on 2025-07-07

The Open Source Security Foundation is a cross-industry collaboration to improve the security of open source software (OSS). The Scorecard provides security health metrics for open source projects.

Learn More