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Why this exists Tools need settings: which endpoints to check, what port to listen on, an API token. A good loader has a clear order (defaults, then file, then environment), catches typos in the file, and reports every…
Loading Configuration: JSON, Environment Overrides and Validation
Read a JSON config file into a struct, reject unknown fields, apply defaults and environment-variable overrides, validate everything with errors.Join so all problems are reported at once, and print the effective config with secrets hidden.
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