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add-variable-declarations

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add-variable-declarations

Add variable declarations for global assignments.

6.0.33
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add-variable-declarations

Add variable declarations for implicit global variable assignments.

Install

# via yarn
$ yarn add add-variable-declarations
# via npm
$ npm install add-variable-declarations

Usage

import { addVariableDeclarations } from 'add-variable-declarations';

const source = `
PI = 3.14;
radius = 8;
circumference = 2 * PI * radius;
`;

console.log(addVariableDeclarations(source).code);
// var PI = 3.14;
// var radius = 8;
// var circumference = 2 * PI * radius;

Development

  • Clone the repository.

    https://github.com/eventualbuddha/add-variable-declarations.git

  • Install dependencies.

    yarn install

  • Make edits and re-build.

    yarn run build

  • Or, to watch and build files as you edit.

    yarn run build -- --watch

  • Run tests to ensure everything works.

    yarn test

FAQ

Why?

This project is used by decaffeinate to add variable declarations to converted CoffeeScript code. This project is not intended to allow you to write JavaScript without variable declarations, as I consider that a bad practice for the same reasons it's a bad practice in CoffeeScript.

Why var? Shouldn't this use let and const?

Yes, but not all situations allow the use of let and const, such as when the variable binding takes advantage of hoisting. If you want let and const you can use this library in combination with esnext which will turn all eligible var declarations into let or const as appropriate.

License

MIT

FAQs

Package last updated on 30 May 2025

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