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README.md

babel-code-frame

Generate errors that contain a code frame that point to source locations.

Install

npm install --save-dev babel-code-frame

Usage

import codeFrame from 'babel-code-frame';

const rawLines = `class Foo {
  constructor()
}`;
const lineNumber = 2;
const colNumber = 16;

const result = codeFrame(rawLines, lineNumber, colNumber, { /* options */ });

console.log(result);

  1 | class Foo {
> 2 |   constructor()
    |                ^
  3 | }

If the column number is not known, you may pass null instead.

Options

`highlightCode`

boolean, defaults to false.

Toggles syntax highlighting the code as JavaScript for terminals.

`linesAbove`

number, defaults to 2.

Adjust the number of lines to show above the error.

`linesBelow`

number, defaults to 3.

Adjust the number of lines to show below the error.

`forceColor`

boolean, defaults to false.

Enable this to forcibly syntax highlight the code as JavaScript (for non-terminals); overrides highlightCode.