test: add test to ensure that node is defined

[nolanlawson]

#418 makes me a bit nervous but I can't seem to find any case in the Vitest tests at least where the node would be undefined... this adds a check to prove it.

[github-actions]

📊 Tachometer Benchmark Results

Summary

benchmark-total

• emoji-picker-element-change-tab: unsure 🔍 -0% - +1% (-0.07ms - +0.25ms)
  ^{this-change vs tip-of-tree}
• emoji-picker-element-database-interactions: unsure 🔍 -4% - +5% (-4.72ms - +4.83ms)
  ^{this-change vs tip-of-tree}
• emoji-picker-element-first-load: unsure 🔍 -5% - +4% (-2.72ms - +2.12ms)
  ^{this-change vs tip-of-tree}
• emoji-picker-element-search: unsure 🔍 -0% - +0% (-0.07ms - +0.18ms)
  ^{this-change vs tip-of-tree}
• emoji-picker-element-second-load: slower ❌ 0% - 9% (0.21ms - 3.38ms)
  ^{this-change vs tip-of-tree}

Results

emoji-picker-element-change-tab

• Browser: chrome-headless 123.0.6312.105
• Sample size: 50
• Built by: Benchmarks #426

• Commit: 4c577ab

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	33.30ms - 33.55ms	-	unsure 🔍 -0% - +1% -0.07ms - +0.25ms
tip-of-tree tip-of-tree	33.24ms - 33.43ms	unsure 🔍 -1% - +0% -0.25ms - +0.07ms	-

emoji-picker-element-database-interactions

• Browser: chrome-headless 123.0.6312.105
• Sample size: 50
• Built by: Benchmarks #426

• Commit: 4c577ab

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	102.44ms - 109.53ms	-	unsure 🔍 -4% - +5% -4.72ms - +4.83ms
tip-of-tree tip-of-tree	102.74ms - 109.12ms	unsure 🔍 -5% - +4% -4.83ms - +4.72ms	-

emoji-picker-element-first-load

• Browser: chrome-headless 123.0.6312.105
• Sample size: 50
• Built by: Benchmarks #426

• Commit: 4c577ab

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	50.59ms - 53.99ms	-	unsure 🔍 -5% - +4% -2.72ms - +2.12ms
tip-of-tree tip-of-tree	50.87ms - 54.31ms	unsure 🔍 -4% - +5% -2.12ms - +2.72ms	-

emoji-picker-element-search

• Browser: chrome-headless 123.0.6312.105
• Sample size: 50
• Built by: Benchmarks #426

• Commit: 4c577ab

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	50.00ms - 50.08ms	-	unsure 🔍 -0% - +0% -0.07ms - +0.18ms
tip-of-tree tip-of-tree	49.86ms - 50.10ms	unsure 🔍 -0% - +0% -0.18ms - +0.07ms	-

emoji-picker-element-second-load

• Browser: chrome-headless 123.0.6312.105
• Sample size: 80
• Built by: Benchmarks #426

• Commit: 4c577ab

Version	Avg time	vs this-change	vs tip-of-tree tip-of-tree
this-change	37.15ms - 39.15ms	-	slower ❌ 0% - 9% 0.21ms - 3.38ms
tip-of-tree tip-of-tree	35.12ms - 37.59ms	faster ✔ 1% - 9% 0.21ms - 3.38ms	-

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[github-actions]

Size Change: 0 B

Total Size: 36.4 kB

ℹ️ View Unchanged

Filename	Size
./bundle.js	36.4 kB

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