Open Mark-Abadir opened 4 years ago
Thanks @Mark-Abadir - is there any more to the error message than that? Can you describe your environment? I just ran a plain cookiecutter https://github.com/plotly/dash-component-boilerplate.git
followed by npm run build
on my mac, and it all seemed to work fine, but I could certainly imagine there being platform-specific issues.
This happens to me as well, running a brand new cookiecutter https://github.com/plotly/dash-component-boilerplate.git
followed by npm run build
Webpack seems to be outputting normally:
webpack --mode production Hash: ef69a9576f2095a97ace Version: webpack 4.36.1 Time: 492ms Built at: 06/22/2020 1:14:17 AM Asset Size Chunks Chunk Names test_proj.min.js 3.16 KiB 0 [emitted] main test_proj.min.js.map 7.38 KiB 0 [emitted] main Entrypoint main = test_proj.min.js test_proj.min.js.map [0] external "PropTypes" 42 bytes {0} [built] [1] external "React" 42 bytes {0} [built] [2] ./src/lib/index.js + 1 modules 5.04 KiB {0} [built] | ./src/lib/index.js 122 bytes [built] | + 1 hidden module
This seems to error out:
test_proj@0.0.1 build:py_and_r /media/data/Dev/Projects/dash-hello-world/test_proj dash-generate-components ./src/lib/components testproj -p package-info.json --r-prefix 'r'
Traceback (most recent call last): File "/home/rob/.local/bin/dash-generate-components", line 11, in
sys.exit(cli()) File "/home/rob/.local/lib/python2.7/site-packages/dash/development/component_generator.py", line 194, in cli rsuggests=args.r_suggests, File "/home/rob/.local/lib/python2.7/site-packages/dash/development/component_generator.py", line 90, in generate_components metadata = safe_json_loads(out.decode("utf-8")) File "/home/rob/.local/lib/python2.7/site-packages/dash/development/component_generator.py", line 132, in safe_json_loads jsondata_unicode = json.loads(s, object_pairs_hook=OrderedDict) File "/usr/lib/python2.7/json/init.py", line 352, in loads return cls(encoding=encoding, **kw).decode(s) File "/usr/lib/python2.7/json/decoder.py", line 364, in decode obj, end = self.raw_decode(s, idx=_w(s, 0).end()) File "/usr/lib/python2.7/json/decoder.py", line 382, in raw_decode raise ValueError("No JSON object could be decoded") ValueError: No JSON object could be decoded
Looks like some JSON is missing? I am running on Ubuntu 18.04.4 LTS
For me, it was a false alarm, I had to make sure I was in the venv
before I ran npm run build
In the project root, source venv/bin/activate
, then npm run build
worked for me.
@Mark-Abadir, I hope this helps you as well.
Sorry for the delayed response.
@alexcjohnson That is the entire error message. I tried using npm run build with python 2.7 and python 3.8. Same error message both times. Both have dash as part of the included packages. ch @RobAlonzi Thanks for the advice but I didn't get that error specifically. And source venv/bin/activate didn't change anything for me
Hi Mark, here's exactly what I did wrote in the terminal (Ubuntu), and I had no error:
$ cookiecutter https://github.com/plotly/dash-component-boilerplate.git
project_name [my dash component]:
project_shortname [my_dash_component]:
component_name [MyDashComponent]:
r_prefix []:
author_name [Enter your first and last name (For package.json)]: Xing Han
author_email [Enter your email (For package.json)]: xinghan@plot.lly
github_org []:
description [Project Description]:
Select license:
1 - MIT License
2 - BSD License
3 - ISC License
4 - Apache Software License 2.0
5 - GNU General Public License v3
6 - Not open source
Choose from 1, 2, 3, 4, 5, 6 [1]:
publish_on_npm [True]:
install_dependencies [True]:
Executing: /home/xhlu/miniconda3/bin/python -m venv venv
Installing dependencies
<...>
$ cd my_dash_components/
$ source venv/bin/activate
$ npm i
$ npm run build:all
I noticed you are running on Windows. Have you tried Windows Subsystem for Linux (WSL) 2.0? If I remember correctly, source venv/bin/activate
does not work in a Win10 command prompt, so maybe you have to use venv\Scripts\activate.bat
instead?
Hello, I have been having an issue with the dash component boilerplate not generating my components. When I execute
npm run build
It generates the following error
To test whether this was something that was wrong with my javascript, I ran the cookiecutter command again in a new python project to create a new component. For set up I selected the following
From there I tried npm run build on the example javascript component provided, and it still gave me the above error. Can you please advise?
Edit: Forgot to mention that it was working before.