First, add publish-scripts as a dev dep
yarn add --dev publish-scripts
Now, update your package.json's scripts property:
"build:cjs": "yarn tsc -p tsconfig.json --outDir dist --module commonjs || true",
"build:mjs": "yarn tsc -p tsconfig.json --outDir mjs --module es2022 --declaration false || true",
"build:rename": "publish-scripts --cmd rename --srcDir mjs --outDir dist --findExt js --replaceExt mjs",
"build:copy": "publish-scripts --cmd copy --srcDir dist --outDir . --findExt js,map,mjs,d.ts --stripPath codegen",
"build:clean": "publish-scripts --cmd clean --srcDir dist --outDir . --findExt js,map,mjs,d.ts --stripPath codegen --removeEmpty",
"build:ignore": "publish-scripts --cmd ignore --srcDir dist --outDir . --findExt js,map,mjs,d.ts --stripPath codegen --gitignoreFile .gitignore",
"build": "npm run clean && npm run build:cjs && npm run build:mjs && npm run build:rename && rimraf mjs && npm run build:copy && npm run build:ignore",
"clean:mjs": "rimraf mjs",
"clean:dist": "rimraf dist",
"clean": "npm run build:clean && npm run clean:mjs && npm run clean:dist",