table of contents won't show async function

[j-carson]

Description

When opening the table of contents widget for a .py file, only the non-async functions are bookmarked

Reproduce

1. Create a .py file with an async function
2. Open the table of contents widget
3. Function is not there
   

Expected behavior

Table of contents shows all my functions

Context

• Operating System and version: Linux Ubuntu 20.04
• Browser and version: Firefox 126
• JupyterLab version: 4.2.0

Let me know if you really need all those details and I will try again

• I tried to save them and github would not accept them because there were too many characters

Browser Output

TypeError: i is undefined
    getHover hover.ts:321
    factory jlab_core.b91074b1e57242ddcd31.js:1
    _execute jlab_core.b91074b1e57242ddcd31.js:1
    o jlab_core.b91074b1e57242ddcd31.js:1

[krassowski]

Thank you for reporting! To solve it this regular expression needs to be updated:

jupyterlab/packages/fileeditor/src/toc/python.ts

Lines 20 to 22 in 3079730

	KEYWORDS = new RegExp('^\\s*(class |def |from |import )', 'd');
	} catch {
	KEYWORDS = new RegExp('^\\s*(class |def |from |import )');

and we will also need a new test case (or a few) in:

jupyterlab/packages/fileeditor/test/python.spec.ts

Lines 14 to 27 in 3079730

	describe('#getHeadings', () => {
	it.each<[string, IEditorHeading[]]>([
	['', []],
	['a = 2', []],
	[
	'def f(a, b):',
	[
	{
	text: 'def f(a, b):',
	level: 1,
	line: 0
	}
	]
	],

[Kunalpal216]

Is this issue open ? I would like to work on this.

[krassowski]

@Kunalpal216 please do!

[fcollonval]

Fixed by #16443