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-rw-r--r--src/compiler/optimize/index.ts98
1 files changed, 0 insertions, 98 deletions
diff --git a/src/compiler/optimize/index.ts b/src/compiler/optimize/index.ts
deleted file mode 100644
index fcbd6e950..000000000
--- a/src/compiler/optimize/index.ts
+++ /dev/null
@@ -1,98 +0,0 @@
-import type { Ast, TemplateNode } from '../../parser/interfaces';
-import type { NodeVisitor, OptimizeOptions, Optimizer, VisitorFn } from '../../@types/optimizer';
-
-import { walk } from 'estree-walker';
-
-// Optimizers
-import optimizeStyles from './styles.js';
-import optimizeDoctype from './doctype.js';
-import optimizeModuleScripts from './module-scripts.js';
-import optimizeCodeBlocks from './prism.js';
-
-interface VisitorCollection {
- enter: Map<string, VisitorFn[]>;
- leave: Map<string, VisitorFn[]>;
-}
-
-/** Add visitors to given collection */
-function addVisitor(visitor: NodeVisitor, collection: VisitorCollection, nodeName: string, event: 'enter' | 'leave') {
- if (typeof visitor[event] !== 'function') return;
- if (!collection[event]) collection[event] = new Map<string, VisitorFn[]>();
-
- const visitors = collection[event].get(nodeName) || [];
- visitors.push(visitor[event] as any);
- collection[event].set(nodeName, visitors);
-}
-
-/** Compile visitor actions from optimizer */
-function collectVisitors(optimizer: Optimizer, htmlVisitors: VisitorCollection, cssVisitors: VisitorCollection, finalizers: Array<() => Promise<void>>) {
- if (optimizer.visitors) {
- if (optimizer.visitors.html) {
- for (const [nodeName, visitor] of Object.entries(optimizer.visitors.html)) {
- addVisitor(visitor, htmlVisitors, nodeName, 'enter');
- addVisitor(visitor, htmlVisitors, nodeName, 'leave');
- }
- }
- if (optimizer.visitors.css) {
- for (const [nodeName, visitor] of Object.entries(optimizer.visitors.css)) {
- addVisitor(visitor, cssVisitors, nodeName, 'enter');
- addVisitor(visitor, cssVisitors, nodeName, 'leave');
- }
- }
- }
- finalizers.push(optimizer.finalize);
-}
-
-/** Utility for formatting visitors */
-function createVisitorCollection() {
- return {
- enter: new Map<string, VisitorFn[]>(),
- leave: new Map<string, VisitorFn[]>(),
- };
-}
-
-/** Walk AST with collected visitors */
-function walkAstWithVisitors(tmpl: TemplateNode, collection: VisitorCollection) {
- walk(tmpl, {
- enter(node, parent, key, index) {
- if (collection.enter.has(node.type)) {
- const fns = collection.enter.get(node.type)!;
- for (let fn of fns) {
- fn.call(this, node, parent, key, index);
- }
- }
- },
- leave(node, parent, key, index) {
- if (collection.leave.has(node.type)) {
- const fns = collection.leave.get(node.type)!;
- for (let fn of fns) {
- fn.call(this, node, parent, key, index);
- }
- }
- },
- });
-}
-
-/**
- * Optimize
- * Step 2/3 in Astro SSR.
- * Optimize is the point at which we mutate the AST before sending off to
- * Codegen, and then to Snowpack. In some ways, it‘s a preprocessor.
- */
-export async function optimize(ast: Ast, opts: OptimizeOptions) {
- const htmlVisitors = createVisitorCollection();
- const cssVisitors = createVisitorCollection();
- const finalizers: Array<() => Promise<void>> = [];
-
- const optimizers = [optimizeStyles(opts), optimizeDoctype(opts), optimizeModuleScripts(opts), optimizeCodeBlocks(ast.module)];
-
- for (const optimizer of optimizers) {
- collectVisitors(optimizer, htmlVisitors, cssVisitors, finalizers);
- }
-
- walkAstWithVisitors(ast.css, cssVisitors);
- walkAstWithVisitors(ast.html, htmlVisitors);
-
- // Run all of the finalizer functions in parallel because why not.
- await Promise.all(finalizers.map((fn) => fn()));
-}