digital-garbage
58193d3f21
register/zlayer/anchor/motion/density are pure cores over plain data, so most of the suite runs with no DOM at all; jsdom covers only what is genuinely DOM. 100 tests, zero elements. These five are why v4 had 11 hand-built modals and 7 hand-built popovers: there was nothing shared to reuse. register makes an element exist only because a file defined it; portal gives every overlay one stacking parent; zlayer owns the only z-index in the app; dismiss keeps one stack so Escape pops the top and not the modal underneath; anchor measures, flips and clamps once. Three bugs the tests found: unmount() called removeChild on null when no portal existed yet, focusables() checked aria-hidden on the element instead of its ancestors so a hidden subtree stayed tab-reachable, and the density ratios v4 hand-tuned are now derived from the gap they were meant to allow for.
15 lines
353 B
JavaScript
15 lines
353 B
JavaScript
// Unique ids, so a label can point at its control without the caller inventing
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// a naming scheme (and colliding when the same panel is mounted twice).
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let n = 0;
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export function uid(prefix = "cx") {
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n += 1;
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return `${prefix}-${n}`;
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}
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// Tests only: ids are otherwise monotonic for the life of the page.
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export function _resetIds() {
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n = 0;
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}
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