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fix(tui): reduce tab pulse allocations (#39433)

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Kit Langton 2026-07-28 22:43:46 -04:00 • committed by GitHub
commit b47cfbee7c
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2 changed files with 57 additions and 12 deletions
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23
packages/tui/test/component/tab-pulse.test.ts
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@ -1,5 +1,7 @@
import { expect, test } from "bun:test"
import { completionPulseOpacity, unreadGlowIntensity } from "../../src/component/tab-pulse"
import { RGBA } from "@opentui/core"
import { blendTabPulseColor, completionPulseOpacity, unreadGlowIntensity } from "../../src/component/tab-pulse"
import { tint } from "../../src/theme/color"
test("completion pulse rises quickly and fades over the remaining duration", () => {
expect(completionPulseOpacity(0)).toBe(0)
@ -24,3 +26,22 @@ test("unread glow reaches the normal background on compact tabs", () => {
expect(unreadGlowIntensity(0, 8)).toBe(1)
expect(unreadGlowIntensity(7, 8)).toBe(0)
})
test("reuses a color while preserving the original glow and pulse blend stages", () => {
const output = RGBA.fromInts(0, 0, 0)
const background = RGBA.fromHex("#1a1b26")
const glowColor = RGBA.fromHex("#82aaff")
const runningColor = RGBA.fromHex("#c8d3f5")
const completionColor = RGBA.fromHex("#ff9e64")
for (const glow of [0, 0.08, 0.16]) {
for (const running of [0, 0.01, 0.07, 0.14]) {
for (const completion of [0, 0.03, 0.09, 0.18]) {
blendTabPulseColor(output, background, glowColor, runningColor, completionColor, glow, running, completion)
expect(output.buffer).toEqual(
tint(tint(tint(background, glowColor, glow), runningColor, running), completionColor, completion).buffer,
)
}
}
}
})