deno types

$ deno types --help

deno-types
Print runtime TypeScript declarations.
  deno types > lib.deno.d.ts

The declaration file could be saved and used for typing information.

USAGE:
    deno types [OPTIONS]

OPTIONS:
    -h, --help
            Prints help information

    -L, --log-level <log-level>
            Set log level [possible values: debug, info]

    -q, --quiet
            Suppress diagnostic output
            By default, subcommands print human-readable diagnostic messages to stderr.
            If the flag is set, restrict these messages to errors.
        --unstable
            Enable unstable APIs