import with typescript

[MaTiAtSIE]

Hi, I try to import parquet-wasm. However, it seems that the folder structure of the package does not match the README file. For instance the line

import * as parquet from 'parquet-wasm'

does not work as the compiler error says "Cannot find module 'parquet-wasm' or its corresponding type declarations" (tsc 4.9.5). I installed the package with

yarn add apache-arrow
yarn add parquet-wasm

After the installation, my typescript version was set to 4.5.5 and I manually reset the version to 4.9.5 by

yarn add typescript@4.9.5

The folder structure in {package_root}/node_modules/parquet-wasm is:

• bundler -- parquet_wasm.d.ts -- parquet_wasm.js -- parquet_wasm_bg.js -- parquet_wasm_bg.wasm -- parquet_wasm_bg.wasm.ts
• esm -- package.json -- parquet_wasm.d.ts -- parquet_wasm.js -- parquet_wasm_bg.wasm -- parquet_wasm_bg.wasm.ts
• node -- package.json -- parquet_wasm.d.ts -- parquet_wasm.js -- parquet_wasm_bg.wasm -- parquet_wasm_bg.wasm.ts

So "parquet-wasm/bundler/arrow1" does not exist. What can be the problem?

[kylebarron]

does not work as the compiler error says "Cannot find module 'parquet-wasm' or its corresponding type declarations" (tsc 4.9.5).

Can you either pin to the most recent stable version (i.e. 0.5.0) or try out this branch: https://github.com/kylebarron/parquet-wasm/pull/414? As mentioned here, the arrow2 implementation is no longer supported.

[MaTiAtSIE]

Thank you for the answer. Using the version 0.5.0 helped. I also had to enable 'asyncWebAssembly' in my webpack.config.js (webpack 5). Now I have another runtime issue which is documented here.

[kylebarron]

This should be fixed in 0.6.0, which was just published