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@ -1,60 +1,41 @@
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import { b } from 'code-red';
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import { b } from 'code-red';
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import Component from '../Component';
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import { string_literal } from '../utils/stringify.js';
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import { CompileOptions, CssResult } from '../../interfaces';
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import Renderer from './Renderer.js';
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import { string_literal } from '../utils/stringify';
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import Renderer from './Renderer';
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import { INode as TemplateNode } from '../nodes/interfaces'; // TODO
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import Text from '../nodes/Text';
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import { LabeledStatement, Statement, Node } from 'estree';
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import { extract_names } from 'periscopic';
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import { extract_names } from 'periscopic';
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import { walk } from 'estree-walker';
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import { walk } from 'estree-walker';
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import { invalidate } from '../render_dom/invalidate.js';
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import { invalidate } from '../render_dom/invalidate';
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import check_enable_sourcemap from '../utils/check_enable_sourcemap.js';
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import check_enable_sourcemap from '../utils/check_enable_sourcemap';
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/**
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export default function ssr(
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* @param {import('../Component.js').default} component
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component: Component,
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* @param {import('../../interfaces.js').CompileOptions} options
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options: CompileOptions
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* @returns {{ js: import("C:/repos/svelte/svelte/node_modules/.pnpm/@types+estree@1.0.0/node_modules/@types/estree/index").Node[]; css: CssResult; }}
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): { js: Node[]; css: CssResult } {
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*/
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export default function ssr(component, options) {
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const renderer = new Renderer({
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const renderer = new Renderer({
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name: component.name
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name: component.name
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});
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});
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const { name } = component;
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const { name } = component;
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// create $$render function
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// create $$render function
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renderer.render(
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renderer.render(trim(component.fragment.children), Object.assign({
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trim(component.fragment.children),
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Object.assign(
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{
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locate: component.locate
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locate: component.locate
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},
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}, options));
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options
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)
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);
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// TODO put this inside the Renderer class
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// TODO put this inside the Renderer class
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const literal = renderer.pop();
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const literal = renderer.pop();
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// TODO concatenate CSS maps
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// TODO concatenate CSS maps
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const css = options.customElement
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const css = options.customElement
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? { code: null, map: null }
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? { code: null, map: null }
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: component.stylesheet.render(options.filename);
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: component.stylesheet.render(options.filename);
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const uses_rest = component.var_lookup.has('$$restProps');
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const uses_rest = component.var_lookup.has('$$restProps');
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const props = component.vars.filter((variable) => !variable.module && variable.export_name);
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const props = component.vars.filter((variable) => !variable.module && variable.export_name);
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const rest = uses_rest
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const rest = uses_rest
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? b`let $$restProps = @compute_rest_props($$props, [${props
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? b `let $$restProps = @compute_rest_props($$props, [${props
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.map((prop) => `"${prop.export_name}"`)
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.map((prop) => `"${prop.export_name}"`)
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.join(',')}]);`
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.join(',')}]);`
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: null;
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: null;
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const uses_slots = component.var_lookup.has('$$slots');
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const uses_slots = component.var_lookup.has('$$slots');
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const slots = uses_slots ? b`let $$slots = @compute_slots(#slots);` : null;
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const slots = uses_slots ? b `let $$slots = @compute_slots(#slots);` : null;
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const reactive_stores = component.vars.filter((variable) => variable.name[0] === '$' && variable.name[1] !== '$');
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const reactive_stores = component.vars.filter(
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(variable) => variable.name[0] === '$' && variable.name[1] !== '$'
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);
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const reactive_store_subscriptions = reactive_stores
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const reactive_store_subscriptions = reactive_stores
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.filter((store) => {
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.filter((store) => {
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const variable = component.var_lookup.get(store.name.slice(1));
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const variable = component.var_lookup.get(store.name.slice(1));
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@ -62,115 +43,91 @@ export default function ssr(
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})
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})
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.map(({ name }) => {
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.map(({ name }) => {
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const store_name = name.slice(1);
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const store_name = name.slice(1);
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return b`
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return b `
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${component.compile_options.dev && b`@validate_store(${store_name}, '${store_name}');`}
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${component.compile_options.dev && b `@validate_store(${store_name}, '${store_name}');`}
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${`$$unsubscribe_${store_name}`} = @subscribe(${store_name}, #value => ${name} = #value)
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${`$$unsubscribe_${store_name}`} = @subscribe(${store_name}, #value => ${name} = #value)
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`;
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`;
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});
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});
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const reactive_store_unsubscriptions = reactive_stores.map(
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const reactive_store_unsubscriptions = reactive_stores.map(({ name }) => b `${`$$unsubscribe_${name.slice(1)}`}()`);
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({ name }) => b`${`$$unsubscribe_${name.slice(1)}`}()`
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);
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const reactive_store_declarations = reactive_stores.map(({ name }) => {
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const reactive_store_declarations = reactive_stores.map(({ name }) => {
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const store_name = name.slice(1);
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const store_name = name.slice(1);
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const store = component.var_lookup.get(store_name);
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const store = component.var_lookup.get(store_name);
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if (store && store.reassigned) {
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if (store && store.reassigned) {
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const unsubscribe = `$$unsubscribe_${store_name}`;
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const unsubscribe = `$$unsubscribe_${store_name}`;
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const subscribe = `$$subscribe_${store_name}`;
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const subscribe = `$$subscribe_${store_name}`;
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return b `let ${name}, ${unsubscribe} = @noop, ${subscribe} = () => (${unsubscribe}(), ${unsubscribe} = @subscribe(${store_name}, $$value => ${name} = $$value), ${store_name})`;
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return b`let ${name}, ${unsubscribe} = @noop, ${subscribe} = () => (${unsubscribe}(), ${unsubscribe} = @subscribe(${store_name}, $$value => ${name} = $$value), ${store_name})`;
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}
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}
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return b`let ${name}, ${`$$unsubscribe_${store_name}`};`;
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return b `let ${name}, ${`$$unsubscribe_${store_name}`};`;
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});
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});
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// instrument get/set store value
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// instrument get/set store value
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if (component.ast.instance) {
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if (component.ast.instance) {
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let scope = component.instance_scope;
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let scope = component.instance_scope;
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const map = component.instance_scope_map;
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const map = component.instance_scope_map;
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walk(component.ast.instance.content, {
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walk(component.ast.instance.content, {
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enter(node: Node) {
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enter(node) {
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if (map.has(node)) {
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if (map.has(node)) {
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scope = map.get(node);
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scope = map.get(node);
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}
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}
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},
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},
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leave(node: Node) {
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leave(node) {
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if (map.has(node)) {
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if (map.has(node)) {
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scope = scope.parent;
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scope = scope.parent;
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}
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}
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if (node.type === 'AssignmentExpression' || node.type === 'UpdateExpression') {
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if (node.type === 'AssignmentExpression' || node.type === 'UpdateExpression') {
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const assignee = node.type === 'AssignmentExpression' ? node.left : node.argument;
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const assignee = node.type === 'AssignmentExpression' ? node.left : node.argument;
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const names = new Set(extract_names(assignee as Node));
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const names = new Set(extract_names(/** @type {import('estree').Node} */ (assignee)));
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const to_invalidate = new Set<string>();
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const to_invalidate = new Set();
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for (const name of names) {
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for (const name of names) {
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const variable = component.var_lookup.get(name);
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const variable = component.var_lookup.get(name);
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if (
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if (variable &&
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variable &&
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!variable.hoistable &&
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!variable.hoistable &&
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!variable.global &&
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!variable.global &&
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!variable.module &&
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!variable.module &&
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(variable.subscribable || variable.name[0] === '$')
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(variable.subscribable || variable.name[0] === '$')) {
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) {
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to_invalidate.add(variable.name);
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to_invalidate.add(variable.name);
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}
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}
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}
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}
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if (to_invalidate.size) {
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if (to_invalidate.size) {
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this.replace(invalidate({ component } as any, scope, node, to_invalidate, true));
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this.replace(invalidate(/** @type {any} */ ({ component }), scope, node, to_invalidate, true));
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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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});
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});
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}
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}
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component.rewrite_props(({ name, reassigned }) => {
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component.rewrite_props(({ name, reassigned }) => {
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const value = `$${name}`;
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const value = `$${name}`;
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let insert = reassigned
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let insert = reassigned
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? b`${`$$subscribe_${name}`}()`
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? b `${`$$subscribe_${name}`}()`
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: b`${`$$unsubscribe_${name}`} = @subscribe(${name}, #value => $${value} = #value)`;
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: b `${`$$unsubscribe_${name}`} = @subscribe(${name}, #value => $${value} = #value)`;
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if (component.compile_options.dev) {
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if (component.compile_options.dev) {
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insert = b`@validate_store(${name}, '${name}'); ${insert}`;
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insert = b `@validate_store(${name}, '${name}'); ${insert}`;
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}
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}
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return insert;
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return insert;
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});
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});
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const instance_javascript = component.extract_javascript(component.ast.instance);
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const instance_javascript = component.extract_javascript(component.ast.instance);
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// TODO only do this for props with a default value
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// TODO only do this for props with a default value
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const parent_bindings = instance_javascript
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const parent_bindings = instance_javascript
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? component.vars
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? component.vars
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.filter((variable) => !variable.module && variable.export_name)
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.filter((variable) => !variable.module && variable.export_name)
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.map((prop) => {
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.map((prop) => {
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return b`if ($$props.${prop.export_name} === void 0 && $$bindings.${prop.export_name} && ${prop.name} !== void 0) $$bindings.${prop.export_name}(${prop.name});`;
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return b `if ($$props.${prop.export_name} === void 0 && $$bindings.${prop.export_name} && ${prop.name} !== void 0) $$bindings.${prop.export_name}(${prop.name});`;
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})
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})
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: [];
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: [];
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const injected = Array.from(component.injected_reactive_declaration_vars).filter((name) => {
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const injected = Array.from(component.injected_reactive_declaration_vars).filter((name) => {
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const variable = component.var_lookup.get(name);
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const variable = component.var_lookup.get(name);
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return variable.injected;
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return variable.injected;
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});
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});
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const reactive_declarations = component.reactive_declarations.map((d) => {
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const reactive_declarations = component.reactive_declarations.map((d) => {
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const body: Statement = (d.node as LabeledStatement).body;
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const body = ( /** @type {import('estree').LabeledStatement} */(d.node)).body;
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let statement = b `${body}`;
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let statement = b`${body}`;
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if (!d.declaration) {
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if (!d.declaration) {
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// TODO do not add label if it's not referenced
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// TODO do not add label if it's not referenced
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statement = b`$: { ${statement} }`;
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statement = b `$: { ${statement} }`;
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}
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}
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return statement;
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return statement;
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});
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});
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const main = renderer.has_bindings
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const main = renderer.has_bindings
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? b`
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? b `
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let $$settled;
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let $$settled;
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let $$rendered;
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let $$rendered;
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@ -186,37 +143,32 @@ export default function ssr(
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return $$rendered;
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return $$rendered;
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`
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`
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: b`
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: b `
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${reactive_declarations}
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${reactive_declarations}
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${reactive_store_unsubscriptions}
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${reactive_store_unsubscriptions}
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return ${literal};`;
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return ${literal};`;
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const blocks = [
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const blocks = [
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...injected.map((name) => b`let ${name};`),
|
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...injected.map((name) => b `let ${name};`),
|
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rest,
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|
rest,
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|
slots,
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|
slots,
|
|
|
|
...reactive_store_declarations,
|
|
|
|
...reactive_store_declarations,
|
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|
|
...reactive_store_subscriptions,
|
|
|
|
...reactive_store_subscriptions,
|
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|
|
instance_javascript,
|
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|
|
instance_javascript,
|
|
|
|
...parent_bindings,
|
|
|
|
...parent_bindings,
|
|
|
|
css.code && b`$$result.css.add(#css);`,
|
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|
|
css.code && b `$$result.css.add(#css);`,
|
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|
|
main
|
|
|
|
main
|
|
|
|
].filter(Boolean);
|
|
|
|
].filter(Boolean);
|
|
|
|
|
|
|
|
|
|
|
|
const css_sourcemap_enabled = check_enable_sourcemap(options.enableSourcemap, 'css');
|
|
|
|
const css_sourcemap_enabled = check_enable_sourcemap(options.enableSourcemap, 'css');
|
|
|
|
|
|
|
|
const js = b `
|
|
|
|
const js = b`
|
|
|
|
${css.code
|
|
|
|
${
|
|
|
|
? b `
|
|
|
|
css.code
|
|
|
|
|
|
|
|
? b`
|
|
|
|
|
|
|
|
const #css = {
|
|
|
|
const #css = {
|
|
|
|
code: "${css.code}",
|
|
|
|
code: "${css.code}",
|
|
|
|
map: ${css_sourcemap_enabled && css.map ? string_literal(css.map.toString()) : 'null'}
|
|
|
|
map: ${css_sourcemap_enabled && css.map ? string_literal(css.map.toString()) : 'null'}
|
|
|
|
};`
|
|
|
|
};`
|
|
|
|
: null
|
|
|
|
: null}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
${component.extract_javascript(component.ast.module)}
|
|
|
|
${component.extract_javascript(component.ast.module)}
|
|
|
|
|
|
|
|
|
|
|
|
@ -226,28 +178,32 @@ export default function ssr(
|
|
|
|
${blocks}
|
|
|
|
${blocks}
|
|
|
|
});
|
|
|
|
});
|
|
|
|
`;
|
|
|
|
`;
|
|
|
|
|
|
|
|
|
|
|
|
return { js, css };
|
|
|
|
return { js, css };
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
function trim(nodes: TemplateNode[]) {
|
|
|
|
/** @param {TemplateNode[]} nodes */
|
|
|
|
|
|
|
|
function trim(nodes) {
|
|
|
|
let start = 0;
|
|
|
|
let start = 0;
|
|
|
|
for (; start < nodes.length; start += 1) {
|
|
|
|
for (; start < nodes.length; start += 1) {
|
|
|
|
const node = nodes[start] as Text;
|
|
|
|
const node = /** @type {import('../nodes/Text.js').default} */ (nodes[start]);
|
|
|
|
if (node.type !== 'Text') break;
|
|
|
|
if (node.type !== 'Text')
|
|
|
|
|
|
|
|
break;
|
|
|
|
node.data = node.data.replace(/^\s+/, '');
|
|
|
|
node.data = node.data.replace(/^\s+/, '');
|
|
|
|
if (node.data) break;
|
|
|
|
if (node.data)
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
let end = nodes.length;
|
|
|
|
let end = nodes.length;
|
|
|
|
for (; end > start; end -= 1) {
|
|
|
|
for (; end > start; end -= 1) {
|
|
|
|
const node = nodes[end - 1] as Text;
|
|
|
|
const node = /** @type {import('../nodes/Text.js').default} */ (nodes[end - 1]);
|
|
|
|
if (node.type !== 'Text') break;
|
|
|
|
if (node.type !== 'Text')
|
|
|
|
|
|
|
|
break;
|
|
|
|
node.data = node.data.trimRight();
|
|
|
|
node.data = node.data.trimRight();
|
|
|
|
if (node.data) break;
|
|
|
|
if (node.data)
|
|
|
|
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
return nodes.slice(start, end);
|
|
|
|
return nodes.slice(start, end);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Simon Holthausen
3 years ago