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import { run, run_all } from '../../../shared/utils.js';
import { user_pre_effect, user_effect } from '../../reactivity/effects.js';
import {
current_component_context,
current_effect,
deep_read_state,
flush_local_render_effects,
get,
untrack
} from '../../runtime.js';
/**
* Legacy-mode only: Call `onMount` callbacks and set up `beforeUpdate`/`afterUpdate` effects
*/
export function init() {
const context = /** @type {import('#client').ComponentContextLegacy} */ (
current_component_context
);
const callbacks = context.l.u;
if (!callbacks) return;
// beforeUpdate
if (callbacks.b.length) {
user_pre_effect(() => {
observe_all(context);
run_all(callbacks.b);
// beforeUpdate might change state that affects rendering, ensure the render effects following from it
// are batched up with the current run. Avoids for example child components rerunning when they're
// now hidden because beforeUpdate did set an if block to false.
const parent = current_effect?.parent;
if (parent != null && (parent.f & CLEAN) === 0) {
flush_local_render_effects(parent);
}
});
}
// onMount (must run before afterUpdate)
user_effect(() => {
const fns = untrack(() => callbacks.m.map(run));
return () => {
for (const fn of fns) {
if (typeof fn === 'function') {
fn();
}
}
};
});
// afterUpdate
if (callbacks.a.length) {
user_effect(() => {
observe_all(context);
run_all(callbacks.a);
});
}
}
/**
* Invoke the getter of all signals associated with a component
* so they can be registered to the effect this function is called in.
* @param {import('#client').ComponentContextLegacy} context
*/
function observe_all(context) {
if (context.l.s) {
for (const signal of context.l.s) get(signal);
}
deep_read_state(context.s);
}
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