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jest-message-util

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jest-message-util

  • 29.7.0
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What is jest-message-util?

The jest-message-util package provides utilities for formatting and handling error messages in Jest, a popular JavaScript testing framework. It is particularly useful for creating custom error messages and enhancing the readability of test results.

What are jest-message-util's main functionalities?

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);

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Package last updated on 12 Sep 2023

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