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gnomon:tldr:35671

gnomon: Set a high threshold of 0.5 seconds for the elapsed time; exceeding which the timestamp will be colored bright red.
$ ${npm test} | gnomon --high ${0-5}
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This command consists of two parts:

  1. ${npm test}: This is a placeholder that refers to the test script defined in the package.json file of a Node.js project. When you run npm test in the terminal, it executes the test script defined in the package.json file.

  2. | gnomon --high ${0-5}: The | symbol is a pipe operator, used to send the output of the preceding command (${npm test}) to the next command (gnomon). In this case, the output of npm test command is piped to gnomon.

gnomon is a command-line utility used for displaying logs in a more readable and colorful format. It enhances the output by adding timestamps and relative time durations.

The --high ${0-5} argument passed to gnomon specifies the log level. In this case, it sets the log level to be displayed as 'high', which corresponds to log levels 0 to 5. '0' is the highest log level, displaying all logs, while '5' is the lowest, displaying only critical errors or failures.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.
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