Code Frame API

codeFrame(source, location, options?)

Generate code frame showing error location.

Parameters:

• source (string): Source code
• location (object): Error location
  • start.line (number): Start line
  • start.column (number): Start column
  • end (object, optional): End location
• options (object, optional):
  • linesAbove (number): Lines above error
  • linesBelow (number): Lines below error
  • message (string): Error message

Returns: Formatted code frame string

Example:

const frame = codeFrame(source, {
    start: { line: 2, column: 10 },
    end: { line: 2, column: 15 }
}, {
    linesAbove: 2,
    linesBelow: 2,
    message: "Unexpected token"
});