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@ -1,59 +1,121 @@
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import { add_render_callback, flush, intro, schedule_update } from './scheduler.js';
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import { add_render_callback, flush, intro, schedule_update } from './scheduler.js';
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import { set_current_component } from './lifecycle.js'
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import { current_component, set_current_component } from './lifecycle.js'
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import { is_function, run, run_all, noop } from './utils.js';
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import { is_function, run, run_all, noop } from './utils.js';
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import { blankObject } from './utils.js';
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import { blankObject } from './utils.js';
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import { children } from './dom.js';
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import { children } from './dom.js';
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export class $$Component {
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export function bind(component, name, callback) {
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constructor(options, init, create_fragment, not_equal) {
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component.$$.bound[name] = callback;
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this.$$beforeRender = [];
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callback(component.$$.get()[name]);
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this.$$onMount = [];
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}
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this.$$afterRender = [];
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this.$$onDestroy = [];
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this.$$bindings = blankObject();
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export function mount_component({ $$: { fragment }}, target, anchor, hydrate) {
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this.$$callbacks = blankObject();
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if (hydrate) {
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this.$$slotted = options.slots || {};
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fragment.l(children(target));
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fragment.m(target, anchor); // TODO can we avoid moving DOM?
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} else {
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fragment.c();
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fragment[fragment.i ? 'i' : 'm'](target, anchor);
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}
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set_current_component(this);
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component.$$.inject_refs(component.$$.refs);
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const [get_state, inject_props, inject_refs] = init(
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this,
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key => {
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this.$$make_dirty(key);
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if (this.$$bindings[key]) this.$$bindings[key](get_state()[key]);
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}
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);
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this.$$ = { get_state, inject_props, inject_refs, not_equal };
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// onMount happens after the initial afterRender. Because
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// afterRender callbacks happen in reverse order (inner first)
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// we schedule onMount callbacks before afterRender callbacks
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add_render_callback(() => {
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const onDestroy = component.$$.on_mount.map(run).filter(is_function);
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if (component.$$.on_destroy) {
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component.$$.on_destroy.push(...onDestroy);
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} else {
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// Edge case — component was destroyed immediately,
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// most likely as a result of a binding initialising
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run_all(onDestroy);
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}
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component.$$.on_mount = [];
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});
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component.$$.after_render.forEach(add_render_callback);
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}
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this.$$refs = {};
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function destroy(component, detach) {
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if (component.$$) {
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run_all(component.$$.on_destroy);
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component.$$.fragment.d(detach);
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this.$$dirty = null;
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// TODO null out other refs, including component.$$ (but need to
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this.$$bindingGroups = []; // TODO find a way to not have this here?
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// preserve final state?)
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component.$$.on_destroy = component.$$.fragment = null;
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component.$$.get = () => ({});
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}
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}
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function make_dirty(component, key) {
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if (!component.$$.dirty) {
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schedule_update(component);
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component.$$.dirty = {};
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}
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component.$$.dirty[key] = true;
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}
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export class $$Component {
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constructor(options, init, create_fragment, not_equal) {
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const previous_component = current_component;
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set_current_component(this);
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this.$$ = {
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fragment: null,
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// state
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get: null,
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set: noop,
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inject_refs: noop,
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not_equal,
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bound: blankObject(),
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// lifecycle
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on_mount: [],
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on_destroy: [],
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before_render: [],
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after_render: [],
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// everything else
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callbacks: blankObject(),
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slotted: options.slots || {},
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refs: {},
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dirty: null,
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binding_groups: []
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};
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init(this, key => {
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make_dirty(this, key);
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if (this.$$.bound[key]) this.$$.bound[key](this.$$.get()[key]);
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});
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if (options.props) {
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if (options.props) {
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this.$$.inject_props(options.props);
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this.$$.set(options.props);
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}
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}
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run_all(this.$$beforeRender);
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run_all(this.$$.before_render);
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this.$$fragment = create_fragment(this, this.$$.get_state());
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this.$$.fragment = create_fragment(this, this.$$.get());
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if (options.target) {
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if (options.target) {
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intro.enabled = !!options.intro;
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intro.enabled = !!options.intro;
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this.$$mount(options.target, options.anchor, options.hydrate);
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mount_component(this, options.target, options.anchor, options.hydrate);
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flush();
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flush();
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intro.enabled = true;
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intro.enabled = true;
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}
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}
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set_current_component(previous_component);
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}
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}
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$destroy() {
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$destroy() {
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this.$$destroy(true);
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destroy(this, true);
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this.$$update = this.$$destroy = noop;
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this.$destroy = noop;
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}
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}
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$on(type, callback) {
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$on(type, callback) {
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const callbacks = (this.$$callbacks[type] || (this.$$callbacks[type] = []));
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const callbacks = (this.$$.callbacks[type] || (this.$$.callbacks[type] = []));
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callbacks.push(callback);
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callbacks.push(callback);
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return () => {
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return () => {
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@ -64,76 +126,13 @@ export class $$Component {
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$set(values) {
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$set(values) {
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if (this.$$) {
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if (this.$$) {
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const state = this.$$.get_state();
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const state = this.$$.get();
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this.$$.inject_props(values);
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this.$$.set(values);
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for (const key in values) {
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for (const key in values) {
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if (this.$$.not_equal(state[key], values[key])) this.$$make_dirty(key);
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if (this.$$.not_equal(state[key], values[key])) make_dirty(this, key);
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}
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}
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}
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}
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}
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}
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$$bind(name, callback) {
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this.$$bindings[name] = callback;
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callback(this.$$.get_state()[name]);
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}
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$$destroy(detach) {
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if (this.$$) {
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run_all(this.$$onDestroy);
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this.$$fragment.d(detach);
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// TODO null out other refs, including this.$$ (but need to
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// preserve final state?)
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this.$$onDestroy = this.$$fragment = null;
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this.$$.get_state = () => ({});
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}
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}
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$$make_dirty(key) {
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if (!this.$$dirty) {
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schedule_update(this);
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this.$$dirty = {};
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}
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this.$$dirty[key] = true;
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}
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$$mount(target, anchor, hydrate) {
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if (hydrate) {
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this.$$fragment.l(children(target));
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this.$$fragment.m(target, anchor); // TODO can we avoid moving DOM?
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} else {
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this.$$fragment.c();
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this.$$fragment[this.$$fragment.i ? 'i' : 'm'](target, anchor);
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}
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this.$$.inject_refs(this.$$refs);
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// onMount happens after the initial afterRender. Because
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// afterRender callbacks happen in reverse order (inner first)
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// we schedule onMount callbacks before afterRender callbacks
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add_render_callback(() => {
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const onDestroy = this.$$onMount.map(run).filter(is_function);
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if (this.$$onDestroy) {
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this.$$onDestroy.push(...onDestroy);
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} else {
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// Edge case — component was destroyed immediately,
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// most likely as a result of a binding initialising
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run_all(onDestroy);
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}
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this.$$onMount = [];
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});
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this.$$afterRender.forEach(add_render_callback);
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}
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$$update() {
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run_all(this.$$beforeRender);
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this.$$fragment.p(this.$$dirty, this.$$.get_state());
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this.$$.inject_refs(this.$$refs);
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this.$$dirty = null;
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this.$$afterRender.forEach(add_render_callback);
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}
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}
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}
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export class $$ComponentDev extends $$Component {
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export class $$ComponentDev extends $$Component {
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@ -148,7 +147,7 @@ export class $$ComponentDev extends $$Component {
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$destroy() {
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$destroy() {
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super.$destroy();
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super.$destroy();
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this.$$destroy = () => {
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this.$destroy = () => {
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console.warn(`Component was already destroyed`);
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console.warn(`Component was already destroyed`);
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};
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};
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}
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}
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Rich Harris
7 years ago