Thus far Strapi v4.2.0 beta.0 and beta.1 throw errors when running npm start.
❯ npm start
╰─ npm start ─╯
> my-project@0.1.0 start /Users/user/org/my_project
> strapi start
[2022-04-25 20:25:13.210] debug: ⛔️ Server wasn't able to start properly.
[2022-04-25 20:25:13.212] error: Unknown dialect undefined
Error: Unknown dialect undefined
at getDialectClass (/Users/user/org/my_project/node_modules/@strapi/database/lib/dialects/index.js:12:13)
at getDialect (/Users/user/org/my_project/node_modules/@strapi/database/lib/dialects/index.js:19:23)
at new Database (/Users/user/org/my_project/node_modules/@strapi/database/lib/index.js:27:20)
at Function.Database.init (/Users/user/org/my_project/node_modules/@strapi/database/lib/index.js:73:33)
at Strapi.bootstrap (/Users/user/org/my_project/node_modules/@strapi/strapi/lib/Strapi.js:385:30)
at Strapi.load (/Users/user/org/my_project/node_modules/@strapi/strapi/lib/Strapi.js:448:16)
at async Strapi.start (/Users/user/org/my_project/node_modules/@strapi/strapi/lib/Strapi.js:196:9)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! my-project@0.1.0 start: `strapi start`
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the my-project@0.1.0 start script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.