Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | 2x 2x 2x 2x 2x 2x 2x 2x 2x 372x 372x 372x 372x 372x 2x 2x 2x 2x 2x 2x 2x 2x 2x 2x 294x 294x 294x 294x 294x 294x 294x 294x 332x 332x 332x 332x 332x 332x 304x 304x 304x 304x 10x 10x 304x 332x 294x 294x 294x 292x 358x 274x 274x 292x 294x 294x 294x | import { STATE_SYMBOL } from '../../../constants.js';
import { effect, render_effect } from '../../../reactivity/effects.js';
import { untrack } from '../../../runtime.js';
/**
* @param {any} bound_value
* @param {Element} element_or_component
* @returns {boolean}
*/
function is_bound_this(bound_value, element_or_component) {
// Find the original target if the value is proxied.
var proxy_target = bound_value && bound_value[STATE_SYMBOL]?.t;
return bound_value === element_or_component || proxy_target === element_or_component;
}
/**
* @param {Element} element_or_component
* @param {(value: unknown, ...parts: unknown[]) => void} update
* @param {(...parts: unknown[]) => unknown} get_value
* @param {() => unknown[]} [get_parts] Set if the this binding is used inside an each block,
* returns all the parts of the each block context that are used in the expression
* @returns {void}
*/
export function bind_this(element_or_component, update, get_value, get_parts) {
effect(() => {
/** @type {unknown[]} */
var old_parts;
/** @type {unknown[]} */
var parts;
render_effect(() => {
old_parts = parts;
// We only track changes to the parts, not the value itself to avoid unnecessary reruns.
parts = get_parts?.() || [];
untrack(() => {
if (element_or_component !== get_value(...parts)) {
update(element_or_component, ...parts);
// If this is an effect rerun (cause: each block context changes), then nullfiy the binding at
// the previous position if it isn't already taken over by a different effect.
if (old_parts && is_bound_this(get_value(...old_parts), element_or_component)) {
update(null, ...old_parts);
}
}
});
});
return () => {
effect(() => {
if (parts && is_bound_this(get_value(...parts), element_or_component)) {
update(null, ...parts);
}
});
};
});
}
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