Bring compiler into Astro (#4)

* include source compiler

* Import from JS

* Conditionally use the instance contents

Co-authored-by: Fred K. Schott <fkschott@gmail.com>

1 files changed, 179 insertions, 0 deletions

diff --git a/src/compiler/interfaces.ts b/src/compiler/interfaces.ts
new file mode 100644
index 000000000..dcc943141
--- /dev/null
+++ b/src/compiler/interfaces.ts
@@ -0,0 +1,179 @@
+import { Node, Program } from 'estree';
+import { SourceMap } from 'magic-string';
+
+interface BaseNode {
+	start: number;
+	end: number;
+	type: string;
+	children?: TemplateNode[];
+	[prop_name: string]: any;
+}
+
+export interface Fragment extends BaseNode {
+	type: 'Fragment';
+	children: TemplateNode[];
+}
+
+export interface Text extends BaseNode {
+	type: 'Text';
+	data: string;
+}
+
+export interface MustacheTag extends BaseNode {
+	type: 'MustacheTag';
+	expression: string;
+}
+
+export type DirectiveType = 'Action'
+| 'Animation'
+| 'Binding'
+| 'Class'
+| 'EventHandler'
+| 'Let'
+| 'Ref'
+| 'Transition';
+
+interface BaseDirective extends BaseNode {
+	type: DirectiveType;
+	expression: null | Node;
+	name: string;
+	modifiers: string[];
+}
+
+export interface Transition extends BaseDirective{
+	type: 'Transition';
+	intro: boolean;
+	outro: boolean;
+}
+
+export type Directive = BaseDirective | Transition;
+
+export type TemplateNode = Text
+| MustacheTag
+| BaseNode
+| Directive
+| Transition;
+
+export interface Parser {
+	readonly template: string;
+	readonly filename?: string;
+
+	index: number;
+	stack: Node[];
+
+	html: Node;
+	css: Node;
+	js: Node;
+	meta_tags: {};
+}
+
+export interface Script extends BaseNode {
+	type: 'Script';
+	context: string;
+	content: string;
+}
+
+export interface Style extends BaseNode {
+	type: 'Style';
+	attributes: any[]; // TODO
+	content: {
+		start: number;
+		end: number;
+		styles: string;
+	};
+}
+
+export interface Ast {
+	html: TemplateNode;
+	css: Style;
+	instance: Script;
+	module: Script;
+}
+
+export interface Warning {
+	start?: { line: number; column: number; pos?: number };
+	end?: { line: number; column: number };
+	pos?: number;
+	code: string;
+	message: string;
+	filename?: string;
+	frame?: string;
+	toString: () => string;
+}
+
+export type ModuleFormat = 'esm' | 'cjs';
+
+export type CssHashGetter = (args: {
+	name: string;
+	filename: string | undefined;
+	css: string;
+	hash: (input: string) => string;
+}) => string;
+
+export interface CompileOptions {
+	format?: ModuleFormat;
+	name?: string;
+	filename?: string;
+	generate?: 'dom' | 'ssr' | false;
+
+	sourcemap?: object | string;
+	outputFilename?: string;
+	cssOutputFilename?: string;
+	sveltePath?: string;
+
+	dev?: boolean;
+	accessors?: boolean;
+	immutable?: boolean;
+	hydratable?: boolean;
+	legacy?: boolean;
+	customElement?: boolean;
+	tag?: string;
+	css?: boolean;
+	loopGuardTimeout?: number;
+	namespace?: string;
+	cssHash?: CssHashGetter;
+
+	preserveComments?: boolean;
+	preserveWhitespace?: boolean;
+}
+
+export interface ParserOptions {
+	filename?: string;
+	customElement?: boolean;
+}
+
+export interface Visitor {
+	enter: (node: Node) => void;
+	leave?: (node: Node) => void;
+}
+
+export interface AppendTarget {
+	slots: Record<string, string>;
+	slot_stack: string[];
+}
+
+export interface Var {
+	name: string;
+	export_name?: string; // the `bar` in `export { foo as bar }`
+	injected?: boolean;
+	module?: boolean;
+	mutated?: boolean;
+	reassigned?: boolean;
+	referenced?: boolean;  // referenced from template scope
+	referenced_from_script?: boolean;        // referenced from script
+	writable?: boolean;
+
+	// used internally, but not exposed
+	global?: boolean;
+	internal?: boolean; // event handlers, bindings
+	initialised?: boolean;
+	hoistable?: boolean;
+	subscribable?: boolean;
+	is_reactive_dependency?: boolean;
+	imported?: boolean;
+}
+
+export interface CssResult {
+	code: string;
+	map: SourceMap;
+}