How to run index.js

[saclim]

Hi. I have tried the following ways to run the index.js file in windows powershell (run as administrative), but I got error. Can you please advise what is going wrong and how I can solve the issue?

1. W2th node index.js, I got the error message:
   (node:15284) Warning: To load an ES module, set "type": "module" in the package.json or use the .mjs extension.
   (Use node --trace-warnings ... to show where the warning was created)
   C:\Users\sali8720\jsonld-vis-master\jsonld-vis-master\example\index.js:1
   import d3 from 'd3';
   ^^^^^^

SyntaxError: Cannot use import statement outside a module
at wrapSafe (internal/modules/cjs/loader.js:979:16)
at Module._compile (internal/modules/cjs/loader.js:1027:27)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:72:12)
at internal/main/run_main_module.js:17:47

2. I then go to package.json, add "type":"module", and save. Then I run with the command node index.js again. This time, I got the following error.

internal/process/esm_loader.js:74
internalBinding('errors').triggerUncaughtException(
^

Error [ERR_MODULE_NOT_FOUND]: Cannot find package 'd3' imported from C:\Users\sali8720\jsonld-vis-master\jsonld-vis-master\example\index.js
←[90m at packageResolve (internal/modules/esm/resolve.js:655:9)←[39m
←[90m at moduleResolve (internal/modules/esm/resolve.js:696:18)←[39m
←[90m at Loader.defaultResolve [as _resolve] (internal/modules/esm/resolve.js:810:11)←[39m
←[90m at Loader.resolve (internal/modules/esm/loader.js:86:40)←[39m
←[90m at Loader.getModuleJob (internal/modules/esm/loader.js:230:28)←[39m
←[90m at ModuleWrap. (internal/modules/esm/module_job.js:56:40)←[39m
←[90m at link (internal/modules/esm/module_job.js:55:36)←[39m {
code: ←[32m'ERR_MODULE_NOT_FOUND'←[39m

3. By using the original package.json, I changed the extension of index.js to index.mjs, and run node index.mjs.

internal/process/esm_loader.js:74
internalBinding('errors').triggerUncaughtException(
^

Error [ERR_MODULE_NOT_FOUND]: Cannot find package 'd3' imported from C:\Users\sali8720\jsonld-vis-master\jsonld-vis-master\example\index.mjs
←[90m at packageResolve (internal/modules/esm/resolve.js:655:9)←[39m
←[90m at moduleResolve (internal/modules/esm/resolve.js:696:18)←[39m
←[90m at Loader.defaultResolve [as _resolve] (internal/modules/esm/resolve.js:810:11)←[39m
←[90m at Loader.resolve (internal/modules/esm/loader.js:86:40)←[39m
←[90m at Loader.getModuleJob (internal/modules/esm/loader.js:230:28)←[39m
←[90m at ModuleWrap. (internal/modules/esm/module_job.js:56:40)←[39m
←[90m at link (internal/modules/esm/module_job.js:55:36)←[39m {
code: ←[32m'ERR_MODULE_NOT_FOUND'←[39m
}