[dev-2.0] npm run build seems failed with assert

[asukaminato0721]

Most appropriate sub-area of p5.js?

• Accessibility
• Color
• Core/Environment/Rendering
• Data
• DOM
• Events
• Image
• IO
• Math
• Typography
• Utilities
• WebGL
• Build process
• Unit testing
• Internationalization
• Friendly errors
• Other (specify if possible)

p5.js version

1.9.4

Web browser and version

No response

Operating system

linux

Steps to reproduce this

Steps:

1. run npm run build

Snippet:

> npm run build

> p5@1.9.4 build
> rollup -c

[!] SyntaxError: Unexpected identifier 'assert'
    at compileSourceTextModule (node:internal/modules/esm/utils:338:16)
    at ModuleLoader.moduleStrategy (node:internal/modules/esm/translators:103:18)
    at ModuleLoader.#translate (node:internal/modules/esm/loader:437:12)
    at ModuleLoader.loadAndTranslate (node:internal/modules/esm/loader:484:27)
    at ModuleJob._link (node:internal/modules/esm/module_job:115:19)

seems caused by

import pkg from './package.json' assert { type: 'json' };

in rollup.config.mjs

I find that change to

import { readFileSync } from 'fs';
const pkg = JSON.parse(readFileSync('./package.json'));

can successfully build it.

[Rishab87]

I also faced this issue, its because of the new syntax and assert keyword not being present in latest node version, you can use an older npm version like 21, just install nvm and write nvm use 21

[limzykenneth]

Will change to use import attributes using with keyword instead.