gotwarlost/istanbulArchived

Features

• Code Coverage Analysis - Measures executed lines, functions, and branches of JavaScript code to identify untested areas.
• JavaScript AST Transformations - Implements instrumentation by performing structural transformations on the JavaScript abstract syntax tree.
• Runtime Loader Hooks - Utilizes runtime loader hooks to intercept and instrument files during the module loading process.
• Code Instrumentation Utilities - Adds tracking markers to source files or directory trees to enable coverage collection across different environments.
• JavaScript Instrumentation Engines - Injects tracking code into JavaScript files using module loader hooks to monitor execution without modifying source files.
• Execution Coordinate Mapping - Records execution counts for statements and branches in a structured map linked to original source coordinates.
• Wrapper-based Instrumentation - Uses V8-based load hooks to inject tracking code without modifying the original source files.
• Code Coverage Tools - Measures statement, line, function, and branch execution for JavaScript across unit and browser tests.
• Summary Reports - Generates human-readable coverage summaries in multiple formats including HTML, LCOV, and JSON.
• Code Coverage Reportings - Generates HTML, LCOV, and JSON reports to visualize executed parts of a JavaScript codebase.
• Test Coverage Metrics - Computes detailed execution metrics for statements, lines, functions, and branches across various test environments.
• Browser Coverage Instrumentation - Adds tracking logic to JavaScript files to measure code coverage when tests run inside a web browser.
• Threshold Enforcements - Enforces minimum coverage thresholds and triggers errors if requirements are not met.
• Distributed Coverage Aggregation - Combines fragmented coverage reports from multiple concurrent execution processes into a single unified dataset.
• Coverage Data Aggregators - Combines fragmented coverage data from multiple concurrent processes into a single unified dataset.
• File Filtering Utilities - Provides mechanisms to exclude specific files and directories from analysis using globs and path patterns.
• Coverage Exclusion Markers - Allows developers to exclude specific code blocks or paths from coverage calculations via source comments.
• Coverage Exclusions - Allows marking specific statements, branches, or blocks using source comments to remove them from coverage calculations.
• Data Exports - Provides a utility to export detailed execution counts for statements, branches, functions, and lines into JSON reports.
• Report Generators - Generates visual and text summaries of code coverage in HTML, LCOV, and console formats.
• Test Report Aggregators - Collects and merges coverage data from multiple separate processes into a unified report.
• Unit Testing Utilities - Tracks code execution and enforces minimum coverage thresholds during automated unit testing.
• Assertions and Coverage - Code coverage measurement tool.
• Testing Frameworks - Code coverage tool.

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