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/** @import { CompileOptions, CompileResult, ValidatedCompileOptions, ModuleCompileOptions, Root } from '#compiler' */
import { walk as zimmerframe_walk } from 'zimmerframe';
import { convert } from './legacy.js';
import { parse as parse_acorn } from './phases/1-parse/acorn.js';
import { parse as _parse } from './phases/1-parse/index.js';
import { remove_typescript_nodes } from './phases/1-parse/remove_typescript_nodes.js';
import { analyze_component, analyze_module } from './phases/2-analyze/index.js';
import { transform_component, transform_module } from './phases/3-transform/index.js';
import { validate_component_options, validate_module_options } from './validate-options.js';
import * as state from './state.js';
export { default as preprocess } from './preprocess/index.js';
/**
* `compile` converts your `.svelte` source code into a JavaScript module that exports a component
*
* https://svelte.dev/docs/svelte-compiler#svelte-compile
* @param {string} source The component source code
* @param {CompileOptions} options The compiler options
* @returns {CompileResult}
*/
export function compile(source, options) {
state.reset_warning_filter(options.warningFilter);
const validated = validate_component_options(options, '');
state.reset(source, validated);
let parsed = _parse(source);
const { customElement: customElementOptions, ...parsed_options } = parsed.options || {};
/** @type {ValidatedCompileOptions} */
const combined_options = {
...validated,
...parsed_options,
customElementOptions
};
if (parsed.metadata.ts) {
parsed = {
...parsed,
fragment: parsed.fragment && remove_typescript_nodes(parsed.fragment),
instance: parsed.instance && remove_typescript_nodes(parsed.instance),
module: parsed.module && remove_typescript_nodes(parsed.module)
};
}
const analysis = analyze_component(parsed, source, combined_options);
const result = transform_component(analysis, source, combined_options);
result.ast = to_public_ast(source, parsed, options.modernAst);
return result;
}
/**
* `compileModule` takes your JavaScript source code containing runes, and turns it into a JavaScript module.
*
* https://svelte.dev/docs/svelte-compiler#svelte-compile
* @param {string} source The component source code
* @param {ModuleCompileOptions} options
* @returns {CompileResult}
*/
export function compileModule(source, options) {
state.reset_warning_filter(options.warningFilter);
const validated = validate_module_options(options, '');
state.reset(source, validated);
const analysis = analyze_module(parse_acorn(source, false), validated);
return transform_module(analysis, source, validated);
}
/**
* The parse function parses a component, returning only its abstract syntax tree.
*
* The `modern` option (`false` by default in Svelte 5) makes the parser return a modern AST instead of the legacy AST.
* `modern` will become `true` by default in Svelte 6, and the option will be removed in Svelte 7.
*
* https://svelte.dev/docs/svelte-compiler#svelte-parse
* @overload
* @param {string} source
* @param {{ filename?: string; modern: true }} options
* @returns {Root}
*/
/**
* The parse function parses a component, returning only its abstract syntax tree.
*
* The `modern` option (`false` by default in Svelte 5) makes the parser return a modern AST instead of the legacy AST.
* `modern` will become `true` by default in Svelte 6, and the option will be removed in Svelte 7.
*
* https://svelte.dev/docs/svelte-compiler#svelte-parse
* @overload
* @param {string} source
* @param {{ filename?: string; modern?: false }} [options]
* @returns {LegacyRoot}
*/
/**
* The parse function parses a component, returning only its abstract syntax tree.
*
* The `modern` option (`false` by default in Svelte 5) makes the parser return a modern AST instead of the legacy AST.
* `modern` will become `true` by default in Svelte 6, and the option will be removed in Svelte 7.
*
* https://svelte.dev/docs/svelte-compiler#svelte-parse
* @param {string} source
* @param {{ filename?: string; rootDir?: string; modern?: boolean }} [options]
* @returns {Root | LegacyRoot}
*/
export function parse(source, { filename, rootDir, modern } = {}) {
state.reset_warning_filter(() => false);
state.reset(source, { filename, rootDir }); // TODO it's weird to require filename/rootDir here. reconsider the API
const ast = _parse(source);
return to_public_ast(source, ast, modern);
}
/**
* @param {string} source
* @param {Root} ast
* @param {boolean | undefined} modern
*/
function to_public_ast(source, ast, modern) {
if (modern) {
// remove things that we don't want to treat as public API
return zimmerframe_walk(ast, null, {
_(node, { next }) {
// @ts-ignore
delete node.parent;
// @ts-ignore
delete node.metadata;
next();
}
});
}
return convert(source, ast);
}
/**
* @deprecated Replace this with `import { walk } from 'estree-walker'`
* @returns {never}
*/
export function walk() {
throw new Error(
`'svelte/compiler' no longer exports a \`walk\` utility — please import it directly from 'estree-walker' instead`
);
}
export { VERSION } from '../version.js';
export { migrate } from './migrate/index.js';
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