Perspective-cli hosting error: input.on_delete is not a function

[mhkeller]

Bug Report

Steps to Reproduce:

1. Install perspective-cli `npm install -g @finos/perspective-cli
2. Create any csv file and run perspective host my-csv.csv Sample file:

name,value
a,2
b,2
c,4

Expected Result:

I expect it to host a server allowing me to see the data

Actual Result:

It shows this error:

Listening on port 8080
TypeError: input.on_delete is not a function
/usr/local/lib/node_modules/@finos/perspective-cli/node_modules/@finos/perspective/dist/cjs/@finos/perspective-cpp/dist/cjs/perspective.cpp.js:85
          throw ex;
          ^

RuntimeError: abort(TypeError: input.on_delete is not a function). Build with -s ASSERTIONS=1 for more info.
    at process.abort (/usr/local/lib/node_modules/@finos/perspective-cli/node_modules/@finos/perspective/dist/cjs/@finos/perspective-cpp/dist/cjs/perspective.cpp.js:700:15)
    at process.emit (events.js:314:20)
    at processPromiseRejections (internal/process/promises.js:209:33)
    at processTicksAndRejections (internal/process/task_queues.js:98:32)

Environment:

MacOs 10.15.7, node versions tested on 16.0.0 and 12.21.0

Additional Context:

I also tried installing @finso/perspective-cli as a local project dependency and running it with npx perspective host test.csv and it produced the same error.

[sc1f]

This issue is due to a bitrot in perspective-cli—in v0.7.0 we updated the table and view API to be async, but when I went through and changed the constructors to the async form I must have missed the use of the table constructor in perspective-cli.

This would be a good first issue for somebody to look at; it's a pretty easy fix and offers a good springboard to familiarize oneself with the development steps for Perspective.