After tinkering with Deno to extract readings from an Arduino, I encountered a roadblock when it came to using the serialport library correctly. Here is what I attempted:
According to a post, packages from pika.dev should work. However, when trying to use pika, I received the following error:
However, no web-optimized "module" entrypoint was found in its package.json manifest.Using jpsm.org did not resolve the issue either:
import * as SerialPort from "https://dev.jspm.io/serialport";
This resulted in the following error:
error: Uncaught TypeError: exists is not a functionThis could be due to the absence of type headers that are typically available with npm via
@types/serialport, which are not present on pika.dev or jspm.io.
Even attempting to install serialport and @types/serialport through npm and referencing their local paths like so did not provide a solution:
// @deno-types="./node_modules/@types/serialport/index.d.ts"
import * as SerialPort from "https://dev.jspm.io/serialport";
The resulting error was:
error: relative import path "stream" not prefixed with / or ./ or ../ Imported from "file:///home/user/code/deno-serial-test/node_modules/@types/serialport/index.d.ts"This indicates an issue with the library dependencies downloaded via npm as they do not have relative paths, implying that all library modules would need to be altered or patched.
The code snippet I'm attempting to execute is:
// import * as SerialPort from "https://dev.jspm.io/npm:<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="e99a8c9b80888599869b9da9d0c7d9c7d9">[email protected]</a>/lib/index.dew.js";
// @deno-types="./node_modules/@types/serialport/index.d.ts"
import * as SerialPort from "https://dev.jspm.io/serialport";
async function readAvailablePorts() {
const ports = await SerialPort.list();
console.log('Available SerialPorts: ', ports);
}
readAvailablePorts();
If anyone has any ideas on how to resolve this issue, your input would be greatly appreciated.