Scripts using pulse crash without installed tslib package

[mrtusc]

Description

Scripts using pulse do not start without installed tslib package. Instead they crash and show the error message "Error: Cannot find module 'tslib'".

To reproduce the error, just do the following in an empty folder:

npm init -y
npm install @pulsecron/pulse
echo "const p = require('@pulsecron/pulse')" > index.js
node index.js

With an additional npm install tslib the script runs without error.

Expected behavior

The script should run without error even without explicitely adding tslib as dependency.

Code example

No response

Additional context

Used versions:

• Node@20.18.0
• Node@22.11.0
• @pulsecron/pulse@1.6.3

[erwanriou]

I confirm the issue on docker node:20.9.0-alpine it require the tslib even if plain javascript code is used.

[peterdzl]

I found that this is caused by using

npm ci --omit=dev

I get the above missing tslib error when I install omitting devDependencies, but it works fine if dev-deps are included - irrespective of the docker image (node:20-bookworm in my case)

[Nickk4]

I also believe tslib should be added to the dependencies. When I used npm I had no problems, but after switching to yarn:

Error: @pulsecron/pulse tried to access tslib, but it isn't declared in its dependencies; this makes the require call ambiguous and unsound.
Required package: tslib
Required by: @pulsecron/pulse@npm:1.6.7 (via C:***\Yarn\Berry\cache@pulsecron-pulse-npm-1.6.7-2f61b5e39b-10c0.zip\node_modules@pulsecron\pulse\dist)