> Wrangler currently supports an --experimental-json-config flag, which will read your configuration

Wrangler currently supports an --experimental-json-config flag, which will read your configuration from a wrangler.json file, rather than wrangler.toml. The format of this file is exactly the same as the wrangler.toml configuration file, except that the syntax is JSON rather than TOML. This is experimental, and is not recommended for production use.