# babel-code-frame > Generate errors that contain a code frame that point to source locations. ## Install ```sh $ npm install babel-code-frame ``` ## Usage ```js 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); ``` ```sh 1 | class Foo { > 2 | constructor() | ^ 3 | } ``` If the column number is not known, you may pass `null` instead. ## Options name | type | default | description -----------------------|----------|-----------------|------------------------------------------------------ highlightCode | boolean | `false` | Syntax highlight the code as JavaScript for terminals linesAbove | number | 2 | The number of lines to show above the error linesBelow | number | 3 | The number of lines to show below the error