无法从源加载函数定义：无法从函数源生成清单：SyntaxError：意外的标记“。”

Question

I have been facing this firebase emulator error when I try to start the emulator and it stops suddenly by providing this error continuously:

Failed to load function definition from source: Failed to generate manifest from function source: SyntaxError: Unexpected token '.'

I tried many different processes but couldn't find any possible solution to fix this. I updated the firebase-function version as many of them gave that solution but that's not working with me.

My firebase.json file:

 { "hosting": { "predeploy": ["npm run --prefix client build"], "public": "client/out", "cleanUrls": true, "ignore": ["firebase.json", "**/.*", "**/node_modules/**"], "rewrites": [ { "source": "/app/**", "function": "app" }, { "source": "/meeting/*", "destination": "/meeting.html" }, { "source": "/meeting", "destination": "/404.html" } ] }, "functions": { "source": "functions" }, "firestore": { "indexes": "firestore.indexes.json" }, "emulators": { "functions": { "port": 3002 }, "firestore": { "port": 3001 }, "ui": { "enabled": true } } }

package.json file of functions:

 { "name": "@minimal/minimal-kit-react", "author": "minimals.cc", "version": "2.7.0", "private": true, "scripts": { "dev": "next dev -p 3222", "build": "next build && next export", "start": "next start", "lint": "eslint --ext.js,.jsx./src", "lint:fix": "eslint --fix --ext.js,.jsx./src" }, "browserslist": { "production": [ ">0.5%", "last 2 versions", "Firefox ESR", "not dead", "not IE 11", "maintained node versions" ], "development": [ "last 1 chrome version", "last 1 firefox version", "last 1 safari version" ] }, "dependencies": { "@babel/preset-react": "^7.16.7", "@date-io/date-fns": "1.3.13", "@emotion/cache": "^11.6.0", "@emotion/react": "^11.7.0", "@emotion/server": "^11.4.0", "@emotion/styled": "^11.6.0", "@fullcalendar/daygrid": "^5.10.1", "@fullcalendar/interaction": "^5.10.1", "@fullcalendar/list": "^5.10.1", "@fullcalendar/react": "^5.10.1", "@fullcalendar/timegrid": "^5.10.1", "@fullcalendar/timeline": "^5.10.1", "@iconify/react": "^3.1.0", "@material-ui/pickers": "^3.3.10", "@mui/icons-material": "^5.2.4", "@mui/lab": "^5.0.0-alpha.59", "@mui/material": "^5.2.2", "@nandorojo/swr-firestore": "^0.16.0", "@zeit/next-css": "^1.0.1", "@zeit/next-sass": "^1.0.1", "axios": "^0.24.0", "change-case": "^4.1.2", "country-flag-icons": "^1.5.3", "date-fns": "^2.27.0", "firebase": "^9.6.1", "formik": "^2.2.9", "framer-motion": "^4.1.17", "jwt-check-expiration": "^1.0.5", "material-ui-phone-number": "^3.0.0", "moment": "^2.29.1", "next": "^12.0.7", "next-transpile-modules": "^9.0.0", "node-sass": "^4.14.1", "notistack": "^2.0.3", "nprogress": "^0.2.0", "otp-input-react": "^0.2.4", "prevent-orientation": "^2.1.0", "prop-types": "^15.7.2", "react": "17.0.2", "react-countdown": "^2.3.2", "react-dom": "17.0.2", "react-drag-drop-files": "^2.2.2", "react-intersection-observer": "^8.32.5", "react-lazy-load-image-component": "^1.5.1", "react-number-format": "^4.9.1", "react-otp-input": "^2.4.0", "react-phone-input-mui": "^2.9.4", "react-phone-number-input": "^3.1.44", "react-quill": "^2.0.0-beta.4", "react-screen-orientation": "^0.0.4", "simplebar": "^5.3.6", "simplebar-react": "^2.3.6", "stylis": "^4.0.10", "stylis-plugin-rtl": "^2.1.1", "timezone-support": "^2.0.2", "typescript": "^4.4.4", "yup": "^0.32.11" }, "devDependencies": { "@next/eslint-plugin-next": "^12.0.7", "eslint": "^8.4.0", "eslint-config-next": "^12.0.7", "eslint-config-prettier": "^8.3.0", "prettier": "2.5.1" } }

Answer 1

I got the same issue which I solved by reinstalling the firebase-tool package.

npm install -g firebase-tools

Answer 2

I got the same issue. I passed through my index.js. I realized I let a function with no body...

async function myfunctionName()

I erased it, and it worked much better !