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Construction Development Mode Detection

This function detects whether the runtime is in development mode.
It is primarily used to control internal logging and error reporting within the library, such as internal-log and internal-error messages.

  • In Node.js, it checks the NODE_ENV environment variable:

    • Returns true if NODE_ENV is not set to 'production'.
    • Defaults to true (development) if NODE_ENV is undefined.

  • In Browsers, it checks the global flag __LOGRY_DEV__:

    • Returns true if the flag is truthy.
    • Defaults to false (production) if undefined.

This setup assumes Node defaults to development mode for easier local testing, while browsers default to production to avoid unnecessary debug logs.