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Why this exists The earlier pages each teach one skill. A real tool uses them together , and the new skill at this scale is structure : which file does what, how the parts are tested separately, how a package declares…

Capstone: logstat in Node.js, a Complete Project with node:test Tests, Coverage and an Exit Status for CI

Put the whole track together in one real Node project: a parser, a statistics class and a command-line layer, an ES-module package with a bin entry, tests with the built-in runner that call the tool without launching a process, a coverage report, and exit codes a pipeline can use.

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