Function `highlightTreeSitter` fails to markup long code

[ayame113]

Execution was success:

await highlightTreeSitter(`function () {console.log()}\n`.repeat(30), 'source.js')

<span class="syntax--source syntax--js"><span class="syntax--storage syntax--type syntax--function">function</span> <span class="syntax--punctuation syntax--definition syntax--parameters syntax--begin syntax--bracket syntax--round">(</span><span class="syntax--punctuation syntax--definition syntax--parameters syntax--end syntax--bracket syntax--round">)</span> <span class="syntax--punctuation syntax--definition syntax--function syntax--body syntax--begin syntax--bracket syntax--curly">{</span><span class="syntax--support syntax--variable syntax--dom">console</span><span class="syntax--meta syntax--delimiter syntax--period">.</span><span class="syntax--entity syntax--name syntax--function">log</span><span class="syntax--punctuation syntax--definition syntax--parameters syntax--begin syntax--bracket syntax--round">(</span><span class="syntax--punctuation syntax--definition syntax--parameters syntax--end syntax--bracket syntax--round">)</span><span class="syntax--punctuation syntax--definition syntax--function syntax--body syntax--end syntax--bracket syntax--curly">}</span>
...
<span class="syntax--storage syntax--type syntax--function">function</span> <span class="syntax--punctuation syntax--definition syntax--parameters syntax--begin syntax--bracket syntax--round">(</span><span class="syntax--punctuation syntax--definition syntax--parameters syntax--end syntax--bracket syntax--round">)</span> <span class="syntax--punctuation syntax--definition syntax--function syntax--body syntax--begin syntax--bracket syntax--curly">{</span><span class="syntax--support syntax--variable syntax--dom">console</span><span class="syntax--meta syntax--delimiter syntax--period">.</span><span class="syntax--entity syntax--name syntax--function">log</span><span class="syntax--punctuation syntax--definition syntax--parameters syntax--begin syntax--bracket syntax--round">(</span><span class="syntax--punctuation syntax--definition syntax--parameters syntax--end syntax--bracket syntax--round">)</span><span class="syntax--punctuation syntax--definition syntax--function syntax--body syntax--end syntax--bracket syntax--curly">}</span>
</span>

Randomly fail:

await highlightTreeSitter(`function () {console.log()}\n`.repeat(80), 'source.js')

Completely fail:

await highlightTreeSitter(`function () {console.log()}\n`.repeat(120), 'source.js')

<span class="syntax--source syntax--js">function () {console.log()}
function () {console.log()}
...
function () {console.log()}
</span>

As far as I've tested locally, adding something like await delay (100) after buf.setText (sourceCode) in the implementation seems to work as expected.

atom-ide-markdown-service/src/highlighter.ts

Lines 33 to 35 in 6ef490f

	buf.setLanguageMode(lm)
	buf.setText(sourceCode)
	const end = buf.getEndPosition()

const delay = ms => new Promise(resolve=>setTimeout(resolve, ms))

    buf.setLanguageMode(lm)
    buf.setText(sourceCode)
    await delay(100) // <- add this line
    const end = buf.getEndPosition()