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javascriptnode.jstypescriptelectronsvelte

Cannot find module './App.svelte' or its corresponding type declarations

I have a setup that integrates electron with svelte along with typescript support.

when I run the rollup script to compile svelte app, i am getting cannot find module ./App.svelte error as shown below.

Plugin typescript: @rollup/plugin-typescript TS2307: Cannot find module './App.svelte' or its corresponding type declarations.

Here's my package.json configuration :

{
  "name": "tapwire-electron-first",
  "productName": "tapwire-electron-first",
  "version": "1.0.0",
  "description": "My Electron application description",
  "main": "dist/index.js",
  "scripts": {
    "electron-start": "tsc && electron-forge start",
    "electron-package": "electron-forge package",
    "electron-make": "electron-forge make",
    "electron-publish": "electron-forge publish",
    "electron-lint": "eslint --ext .ts .",
    "svelte-build": "rollup -c",
    "svelte-dev": "rollup -c -w",
    "svelte-start": "sirv public",
    "svelte-validate": "svelte-check",
    "start": "run-p svelte-dev electron-start"
  },
  "keywords": [],
  "author": {
    "name": "nateshmbhat",
  },
  "license": "MIT",
  "config": {
    "forge": {
      "packagerConfig": {},
      "makers": [
        {
          "name": "@electron-forge/maker-squirrel",
          "config": {
            "name": "tapwire_electron_first"
          }
        },
        {
          "name": "@electron-forge/maker-zip",
          "platforms": [
            "darwin"
          ]
        },
        {
          "name": "@electron-forge/maker-deb",
          "config": {}
        },
        {
          "name": "@electron-forge/maker-rpm",
          "config": {}
        }
      ]
    }
  },
  "devDependencies": {
    "@electron-forge/cli": "^6.0.0-beta.53",
    "@electron-forge/maker-deb": "^6.0.0-beta.53",
    "@electron-forge/maker-rpm": "^6.0.0-beta.53",
    "@electron-forge/maker-squirrel": "^6.0.0-beta.53",
    "@electron-forge/maker-zip": "^6.0.0-beta.53",
    "@rollup/plugin-commonjs": "^15.1.0",
    "@rollup/plugin-node-resolve": "^9.0.0",
    "@rollup/plugin-typescript": "^6.0.0",
    "@types/node": "^14.11.2",
    "@typescript-eslint/eslint-plugin": "^2.34.0",
    "@typescript-eslint/parser": "^2.34.0",
    "cross-env": "^7.0.2",
    "electron": "10.1.3",
    "eslint": "^7.10.0",
    "eslint-plugin-import": "^2.22.1",
    "npm-run-all": "^4.1.5",
    "rollup": "^2.28.2",
    "rollup-plugin-livereload": "^2.0.0",
    "rollup-plugin-svelte": "^6.0.1",
    "rollup-plugin-terser": "^7.0.2",
    "svelte": "^3.29.0",
    "svelte-check": "^1.0.55",
    "svelte-preprocess": "^4.3.2",
    "typescript": "^4.0.3"
  },
  "dependencies": {
    "concurrently": "^5.3.0",
    "electron-reload": "^1.5.0",
    "electron-squirrel-startup": "^1.0.0",
    "sirv-cli": "^1.0.6"
  }
}
Solution

  • Turns out i had to install @tsconfig/svelte as a dev dependency first then extend this with my tsconfig.json as shown below :

    Install @tsconfig/svelte

    npm i --save-dev @tsconfig/svelte

    Add this tsconfig as the base config file in your tsconfig.json :

    {
  "extends": "@tsconfig/svelte/tsconfig.json",
}