Have trouble using plugin in typescript project

[chi-w-ng]

I encountered a 'could not resolve module' error while using it in a TypeScript project.
To replicate this issue, you can follow these steps:

Start with the Blockly TypeScript sample from:
https://github.com/google/blockly-samples/tree/master/examples/sample-app-ts

Change the tsconfig.json content to:

{
"compilerOptions": {
"baseUrl": "./",
"outDir": "dist",
"declaration": true,
"declarationMap": true,
"module": "ES2015",
"moduleResolution": "node",
"target": "ES2015",
"strict": false,
"sourceMap": true,
"allowJs": true
},
"include": ["desc.d.ts"]
}

Here is the desc.d.ts content that I add to the project root:

declare module "@mit-app-inventor/blockly-block-lexical-variables"

Add the plugin to index.ts of the blockly sample ts project. Build the project will error.

Is there a way to resolve this issue?

Thanks in advance.

[mark-friedman]

@chi-w-ng I don't have much Typescript experience, so I'll have to research this. One thing I would ask is whether you have run npm install mit-app-inventor/blockly-block-lexical-variables --save or the equivalent?

[chi-w-ng]

I have this in my package.json:

"dependencies": {
"@mit-app-inventor/blockly-block-lexical-variables": "^1.0.0",
"blockly": "^10.1.3"
}

so plugin is installed locally. I could see it in node_modules.

A duplicate of the blockly typescript sample project showing the problem is here:

https://github.com/chi-w-ng/blockly_typescript_sample

[mark-friedman]

@chi-w-ng I suspect that at least part of the problem is that there is no Typescript declaration file for this package. Since I don't have much Typescript experience, I wonder if you might be willing to work on this and submit a pull request.