jest-message-util

formatStackTrace

The formatStackTrace function formats a stack trace to make it more readable. This is particularly useful for debugging and understanding where errors occur in your tests.

const { formatStackTrace } = require('jest-message-util');
const stack = new Error().stack;
const formattedStack = formatStackTrace(stack, { rootDir: process.cwd(), testMatch: [] });
console.log(formattedStack);

formatExecError

The formatExecError function formats execution errors to provide more context and readability. This helps in quickly identifying the cause of test failures.

const { formatExecError } = require('jest-message-util');
const error = new Error('Test error');
const formattedError = formatExecError(error, { rootDir: process.cwd(), testMatch: [] });
console.log(formattedError);

getTopFrame

The getTopFrame function extracts the top frame from a stack trace. This is useful for pinpointing the exact location of an error in your code.

const { getTopFrame } = require('jest-message-util');
const stack = new Error().stack;
const topFrame = getTopFrame(stack);
console.log(topFrame);