eslint-compat-utils

This package is still in the experimental stage.

Provides an API for ESLint custom rules that is compatible with the latest ESLint even when using older ESLint.

Installation

``bash
npm install eslint-compat-utils
`

Usage

`js
const { getSourceCode } = require("eslint-compat-utils");
module.exports = {
meta: { / ... / },
create(context) {
const sourceCode = getSourceCode(context)
return {
"Program"(node) {
const scope = sourceCode.getScope(node);
},
};
},
}
`

$3

#### getSourceCode(context)

Returns an extended instance of context.sourceCode or the result of context.getSourceCode(). Extended instances can use new APIs such as getScope(node) even with old ESLint.

#### getCwd(context)

Gets the value of context.cwd, but for older ESLint it returns the result of context.getCwd().
Versions older than v6.6.0 return a value from the result of process.cwd().

#### getFilename(context)

Gets the value of context.filename, but for older ESLint it returns the result of context.getFilename().

#### getPhysicalFilename(context)

Gets the value of context.physicalFilename, but for older ESLint it returns the result of context.getPhysicalFilename().
Versions older than v7.28.0 return a value guessed from the result of context.getFilename()`, but it may be incorrect.