/**
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* Svelte live-mode component injection helpers.
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*
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* Variants are real .svelte components under node_modules/.impeccable-live/<session-id>/.
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* The browser mounts them via Svelte 5 mount(); accept inlines the chosen
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* variant back into the route source with props mapped to original bindings.
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*/
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import fs from 'node:fs';
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import path from 'node:path';
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import os from 'node:os';
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import { createHash } from 'node:crypto';
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import {
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analyzeSvelteMarkup,
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buildPropsScriptV2,
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loadSvelteCompiler,
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restoreSvelteMarkup,
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} from './svelte-ast.mjs';
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import {
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bakeParamValues,
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collectAllSelectors,
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collectUnusedSelectors,
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normalizeSelector,
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parseStylesheet,
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pruneUnusedSelectors,
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reconcileCss,
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serializeNodes,
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splitSelectorList,
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} from './accept-css.mjs';
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import { verifyAcceptedSource } from './accept-verify.mjs';
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// Preview modules stay under node_modules on purpose: SvelteKit restricts
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// vite's server.fs.allow to src/lib, src/routes, .svelte-kit, and
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// node_modules, so an .impeccable/ tree under the app root 403s (verified
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// against a real SvelteKit dev server). Staleness from node_modules being
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// unwatched is solved by REVISIONED module paths instead: every publish
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// snapshots the variant files into a fresh r<N>/ directory and the browser
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// imports from there, so a republished fix can never be pinned by a
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// transform cache keyed on the old path.
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export const SVELTE_COMPONENT_ROOT = 'node_modules/.impeccable-live';
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// A short-lived interim location; swept so no project keeps a stray tree.
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export const LEGACY_SVELTE_COMPONENT_ROOT = '.impeccable/live/previews';
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export const SVELTE_RUNTIME_FILE = `${SVELTE_COMPONENT_ROOT}/__runtime.js`;
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export const SVELTE_PROBE_FILE = `${SVELTE_COMPONENT_ROOT}/__probe.js`;
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export const DEFERRED_ACCEPTS_FILE = '.impeccable/live/deferred-svelte-component-accepts.json';
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const MUSTACHE_RE = /\{([^{}]+)\}/g;
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export function shouldUseSvelteComponentInjection(filePath) {
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if (/^(0|false|no)$/i.test(process.env.IMPECCABLE_LIVE_SVELTE_COMPONENT || '')) return false;
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return path.extname(filePath).toLowerCase() === '.svelte';
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}
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export function componentSessionDir(id, cwd = process.cwd()) {
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return path.join(cwd, SVELTE_COMPONENT_ROOT, id);
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}
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export function manifestPathForSession(id, cwd = process.cwd()) {
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return path.join(componentSessionDir(id, cwd), 'manifest.json');
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}
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export function ensureRuntimeHelper(cwd = process.cwd()) {
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const file = path.join(cwd, SVELTE_RUNTIME_FILE);
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fs.mkdirSync(path.dirname(file), { recursive: true });
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if (!fs.existsSync(file)) {
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fs.writeFileSync(file, `export { mount, unmount } from 'svelte';\n`, 'utf-8');
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}
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// Attach-time probe: the browser imports this through the dev server before
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// the first mount. A 404 here means the resolved app root and the dev
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// server's root disagree, and the session fails with a named error instead
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// of a silent fall-back to the picker at first variant.
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const probe = path.join(cwd, SVELTE_PROBE_FILE);
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if (!fs.existsSync(probe)) {
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fs.writeFileSync(probe, `export const impeccableLivePreviewProbe = true;\n`, 'utf-8');
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}
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return file;
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}
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/**
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* Extract ordered unique mustache expressions from markup (not inside <!-- -->).
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*/
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export function extractMustacheExpressions(text) {
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const expressions = [];
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const seen = new Set();
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const lines = String(text || '').split('\n');
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for (const line of lines) {
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const trimmed = line.trim();
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if (trimmed.startsWith('<!--')) continue;
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let match;
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MUSTACHE_RE.lastIndex = 0;
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while ((match = MUSTACHE_RE.exec(line)) !== null) {
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const expr = match[1].trim();
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if (!expr || seen.has(expr)) continue;
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seen.add(expr);
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expressions.push(expr);
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}
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}
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return expressions;
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}
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export function buildPropContract(expressions) {
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return expressions.map((expr, index) => {
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const derived = derivePropName(expr, index);
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return {
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prop: derived,
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expr,
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placeholder: `{${expr}}`,
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};
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});
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}
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function derivePropName(expr, index) {
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const tail = expr.match(/(?:\.|\[)(\w+)\s*\]?$/);
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if (tail && tail[1] && /^[A-Za-z_$][\w$]*$/.test(tail[1])) {
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return tail[1];
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}
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return `prop${index}`;
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}
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export function substituteExprsWithProps(markup, contract) {
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let out = String(markup || '');
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for (const entry of contract) {
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out = out.split(entry.placeholder).join(`{${entry.prop}}`);
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}
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return out;
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}
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export function substitutePropsWithExprs(markup, contract) {
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let out = String(markup || '');
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for (const entry of contract) {
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out = out.split(`{${entry.prop}}`).join(`{${entry.expr}}`);
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}
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return out;
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}
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export function parseSvelteComponentFile(content) {
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const text = String(content || '');
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const scriptMatch = text.match(/^([\s\S]*?)<script\b[^>]*>[\s\S]*?<\/script>/i);
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const withoutScript = scriptMatch ? text.slice(scriptMatch[0].length) : text;
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const styleMatch = withoutScript.match(/<style\b[^>]*>[\s\S]*?<\/style\s*>/i);
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const styleBlock = styleMatch ? styleMatch[0] : '';
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const markup = styleMatch
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? withoutScript.slice(0, styleMatch.index).trim()
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: withoutScript.trim();
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const cssLines = styleBlock
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? styleBlock
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.replace(/^<style\b[^>]*>/i, '')
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.replace(/<\/style\s*>$/i, '')
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.split('\n')
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.map((line) => line.trimEnd())
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: [];
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while (cssLines.length > 0 && cssLines[0].trim() === '') cssLines.shift();
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while (cssLines.length > 0 && cssLines[cssLines.length - 1].trim() === '') cssLines.pop();
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return { markup, cssLines, styleBlock };
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}
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function buildPropsScript(contract) {
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if (contract.length === 0) {
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return '<script>\n /** @type {Record<string, never>} */\n let {} = $props();\n</script>\n';
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}
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const names = contract.map((c) => c.prop).join(', ');
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const typeFields = contract.map((c) => ` ${c.prop}: string;`).join('\n');
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return `<script>\n /** @type {{\n${typeFields}\n }} */\n let { ${names} } = $props();\n</script>\n`;
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}
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function buildVariantStub(variantNum, originalWithProps, contract) {
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const propsComment = contract.length > 0
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? `\n<!-- Props: ${contract.map((c) => `${c.prop} <- {${c.expr}}`).join(', ')} -->\n`
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: '';
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return `${buildPropsScript(contract)}${propsComment}${originalWithProps.trim()}\n\n<style>\n /* Variant ${variantNum}: add scoped CSS here */\n</style>\n`;
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}
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function buildInsertVariantStub(variantNum) {
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return `${buildPropsScript([])}<div class="impeccable-insert-preview">Insert variant ${variantNum}</div>\n\n<style>\n .impeccable-insert-preview { display: block; }\n</style>\n`;
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}
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/**
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* Scaffold a component-preview session. The scaffold is AST-based: the app's
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* own svelte compiler parses the selected markup, control-flow blocks are
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* preserved (an each collection crosses the prop contract as ONE structured
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* prop, its loop body verbatim), and constructs a detached preview cannot
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* support return `{ fallback: 'source-preview', reason }` so the caller keeps
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* the markup inside the route file instead of shipping a wrong preview.
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*/
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export function scaffoldSvelteComponentSession({
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id,
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count,
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sourceFile,
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sourceStartLine,
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sourceEndLine,
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originalLines,
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cwd = process.cwd(),
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}) {
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const originalMarkup = originalLines.join('\n');
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const compiler = loadSvelteCompiler(cwd);
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if (!compiler) {
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return { fallback: 'source-preview', reason: 'svelte 5 compiler not resolvable from the app root' };
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}
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const analysis = analyzeSvelteMarkup(originalMarkup, compiler.parse);
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if (!analysis.ok) {
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return { fallback: 'source-preview', reason: analysis.reason };
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}
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ensureRuntimeHelper(cwd);
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const dir = componentSessionDir(id, cwd);
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fs.mkdirSync(dir, { recursive: true });
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const contract = analysis.contract;
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const seeded = extractMatchingSourceCss(
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safeReadSource(path.resolve(cwd, sourceFile)),
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originalMarkup,
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);
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const seededCss = seeded.css;
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// The preview compiles in isolation, so NONE of these source rules applied
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// to what the user approved. Accept enforces that preview truth: any of
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// them the variant does not re-declare is superseded and removed, instead
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// of re-attaching to the accepted markup through kept class names (the
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// ".decisions grid grabs the new board" failure). Only the CLASS-matched
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// selectors are candidates; tag rules style shared route elements.
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const seededSelectors = [...seeded.supersedable];
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const manifest = {
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id,
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previewMode: 'svelte-component',
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contractVersion: 2,
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sourceFile: sourceFile.split(path.sep).join('/'),
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sourceStartLine,
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sourceEndLine,
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count,
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propContract: contract,
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originalMarkup,
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seededSelectors,
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componentDir: path.relative(cwd, dir).split(path.sep).join('/'),
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// Absolute paths let the browser fall back to /@fs/ imports when the dev
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// server's base or root makes root-relative URLs miss, and probe whether
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// the preview tree is reachable at all before blaming a variant.
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componentDirAbs: dir.split(path.sep).join('/'),
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runtimeModule: `/${SVELTE_RUNTIME_FILE}`,
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runtimeModuleAbs: path.join(cwd, SVELTE_RUNTIME_FILE).split(path.sep).join('/'),
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probeModule: `/${SVELTE_PROBE_FILE}`,
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probeModuleAbs: path.join(cwd, SVELTE_PROBE_FILE).split(path.sep).join('/'),
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};
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fs.writeFileSync(path.join(dir, 'manifest.json'), JSON.stringify(manifest, null, 2) + '\n', 'utf-8');
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for (let n = 1; n <= count; n++) {
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const variantFile = path.join(dir, `v${n}.svelte`);
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if (!fs.existsSync(variantFile)) {
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fs.writeFileSync(variantFile, buildVariantStubV2(n, analysis.markupWithProps, contract, seededCss), 'utf-8');
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}
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}
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return {
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manifest,
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manifestFile: path.relative(cwd, path.join(dir, 'manifest.json')).split(path.sep).join('/'),
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componentDir: manifest.componentDir,
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propContract: contract,
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// Inlined so the generate event's scaffold payload carries the stub
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// shape; the agent edits vN.svelte in place instead of spending reads on
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// the manifest and stub files (or deleting and recreating them).
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stubMarkup: analysis.markupWithProps,
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seededCss,
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};
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}
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function safeReadSource(filePath) {
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try { return fs.readFileSync(filePath, 'utf-8'); } catch { return ''; }
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}
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function escapeSelectorToken(token) {
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return String(token).replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
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}
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/**
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* Seed variant stubs with the source component's rules that already style the
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* selected markup, so variants start from the real cascade (a detached
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* preview inherits none of the route's compile-scoped CSS) instead of
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* reimplementing it blind.
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*
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* Returns { css, supersedable }. `css` is every matching rule (class OR tag
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* matched). `supersedable` holds only the CLASS-matched selectors: those are
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* the accept-time removal candidates. Tag selectors (h1, a, p) style shared
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* elements across the whole route, so they seed the preview but are never
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* candidates for removal.
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*/
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export function extractMatchingSourceCss(routeSource, originalMarkup) {
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const empty = { css: '', supersedable: new Set() };
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const styleMatch = String(routeSource || '').match(/<style\b[^>]*>([\s\S]*?)<\/style\s*>/i);
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if (!styleMatch) return empty;
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const classNames = new Set();
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const classRe = /class\s*=\s*(["'])(.*?)\1/g;
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let m;
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while ((m = classRe.exec(originalMarkup))) {
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for (const cls of m[2].split(/\s+/)) if (cls && !cls.includes('{')) classNames.add(cls);
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}
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const tagRe = /<([a-z][a-z0-9-]*)/gi;
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const tags = new Set();
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while ((m = tagRe.exec(originalMarkup))) tags.add(m[1].toLowerCase());
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if (classNames.size === 0 && tags.size === 0) return empty;
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// Token-boundary matching, never substring: `.btn` must not match
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// `.btn-primary`, and `.stage` must not match `.stages`. A substring hit
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// seeds a rule that never styled the pick, and a falsely seeded selector
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// becomes an accept-time DELETION of a hand-written rule.
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const classRes = [...classNames].map((cls) => new RegExp('\\.' + escapeSelectorToken(cls) + '(?![A-Za-z0-9_-])'));
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const tagRes = [...tags].map((tag) => new RegExp('(^|[\\s>+~,(])' + escapeSelectorToken(tag) + '(?![A-Za-z0-9_-])', 'i'));
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const classMatches = (selector) => classRes.some((re) => re.test(selector));
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const tagMatches = (selector) => tagRes.some((re) => re.test(selector));
|
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const supersedable = new Set();
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const ruleMatches = (prelude) => {
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let matched = false;
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for (const selector of splitSelectorList(prelude)) {
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if (classMatches(selector)) {
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matched = true;
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supersedable.add(normalizeSelector(selector));
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} else if (tagMatches(selector)) {
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matched = true;
|
}
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}
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return matched;
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};
|
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const pick = (nodes) => {
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const kept = [];
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for (const node of nodes) {
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if (node.type === 'rule' && ruleMatches(node.prelude)) kept.push(node);
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else if (node.type === 'at' && node.children) {
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const children = pick(node.children);
|
if (children.length) kept.push({ ...node, children });
|
}
|
}
|
return kept;
|
};
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return { css: serializeNodes(pick(parseStylesheet(styleMatch[1]))), supersedable };
|
}
|
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function buildVariantStubV2(variantNum, markupWithProps, contract, seededCss) {
|
const propsComment = contract.length > 0
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? `\n<!-- Props: ${contract.map((c) => `${c.prop} (${c.kind}) <- {${c.expr}}`).join(', ')} -->\n`
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: '';
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// The guard comments must never contain the literal "<style" character
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// sequence: agents (and the fake test agent) locate the style block with
|
// string searches, and a mention inside a comment truncates their surgery
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// mid-comment.
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const css = seededCss
|
? `\n<style>\n /* Variant ${variantNum}: seeded from the route's current rules; restyle or delete freely.\n ALL rules go inside THIS block. Svelte allows exactly one top-level style\n element per component; appending a second one is a compile error. */\n${seededCss.split('\n').map((l) => (l.trim() ? ' ' + l : '')).join('\n')}\n</style>\n`
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: `\n<style>\n /* Variant ${variantNum}: add all CSS inside THIS block. Svelte allows exactly\n one top-level style element; a second one is a compile error. */\n</style>\n`;
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return `${buildPropsScriptV2(contract)}${propsComment}${markupWithProps.trim()}\n${css}`;
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}
|
|
export function scaffoldSvelteComponentInsertSession({
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id,
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count,
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sourceFile,
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insertLine,
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position,
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anchorStartLine,
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anchorEndLine,
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anchorLines,
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cwd = process.cwd(),
|
}) {
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ensureRuntimeHelper(cwd);
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const dir = componentSessionDir(id, cwd);
|
fs.mkdirSync(dir, { recursive: true });
|
|
const anchorMarkup = (anchorLines || []).join('\n');
|
const manifest = {
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id,
|
mode: 'insert',
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previewMode: 'svelte-component',
|
sourceFile: sourceFile.split(path.sep).join('/'),
|
insertLine,
|
position,
|
anchorStartLine,
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anchorEndLine,
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originalMarkup: anchorMarkup,
|
anchorMarkup,
|
count,
|
propContract: [],
|
componentDir: path.relative(cwd, dir).split(path.sep).join('/'),
|
componentDirAbs: dir.split(path.sep).join('/'),
|
runtimeModule: `/${SVELTE_RUNTIME_FILE}`,
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runtimeModuleAbs: path.join(cwd, SVELTE_RUNTIME_FILE).split(path.sep).join('/'),
|
probeModule: `/${SVELTE_PROBE_FILE}`,
|
probeModuleAbs: path.join(cwd, SVELTE_PROBE_FILE).split(path.sep).join('/'),
|
};
|
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fs.writeFileSync(path.join(dir, 'manifest.json'), JSON.stringify(manifest, null, 2) + '\n', 'utf-8');
|
|
for (let n = 1; n <= count; n++) {
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const variantFile = path.join(dir, `v${n}.svelte`);
|
if (!fs.existsSync(variantFile)) {
|
fs.writeFileSync(variantFile, buildInsertVariantStub(n), 'utf-8');
|
}
|
}
|
|
return {
|
manifest,
|
manifestFile: path.relative(cwd, path.join(dir, 'manifest.json')).split(path.sep).join('/'),
|
componentDir: manifest.componentDir,
|
propContract: [],
|
};
|
}
|
|
export function findSvelteComponentManifest(id, cwd = process.cwd()) {
|
const direct = manifestPathForSession(id, cwd);
|
if (fs.existsSync(direct)) {
|
return readManifest(direct);
|
}
|
// Legacy location: a session scaffolded by an older version can still be
|
// accepted after an upgrade.
|
const legacyDirect = path.join(cwd, LEGACY_SVELTE_COMPONENT_ROOT, id, 'manifest.json');
|
if (fs.existsSync(legacyDirect)) {
|
return readManifest(legacyDirect);
|
}
|
for (const rootRel of [SVELTE_COMPONENT_ROOT, LEGACY_SVELTE_COMPONENT_ROOT]) {
|
const root = path.join(cwd, rootRel);
|
if (!fs.existsSync(root)) continue;
|
for (const entry of fs.readdirSync(root, { withFileTypes: true })) {
|
if (!entry.isDirectory()) continue;
|
const candidate = path.join(root, entry.name, 'manifest.json');
|
if (!fs.existsSync(candidate)) continue;
|
try {
|
const manifest = readManifest(candidate);
|
if (manifest?.id === id) return { ...manifest, manifestPath: candidate };
|
} catch { /* skip */ }
|
}
|
}
|
return null;
|
}
|
|
export function readManifest(manifestPath) {
|
const data = JSON.parse(fs.readFileSync(manifestPath, 'utf-8'));
|
return {
|
...data,
|
manifestPath,
|
};
|
}
|
|
export function resolveSourceFile(sourceFile, cwd = process.cwd()) {
|
if (!sourceFile || path.isAbsolute(sourceFile)) {
|
throw new Error('Invalid svelte-component source file');
|
}
|
const full = path.resolve(cwd, sourceFile);
|
const rel = path.relative(cwd, full);
|
if (!rel || rel.startsWith('..') || path.isAbsolute(rel)) {
|
throw new Error('Svelte-component source file escapes project root');
|
}
|
if (!fs.existsSync(full)) {
|
throw new Error('Svelte-component source file not found: ' + sourceFile);
|
}
|
return full;
|
}
|
|
function appendCssToSvelteStyle(lines, cssLines) {
|
const closeIdx = findLastStyleCloseLine(lines);
|
const prepared = ['', ...cssLines.map((line) => (line.trim() === '' ? '' : ' ' + line.trimStart()))];
|
if (closeIdx === -1) {
|
return [...lines, '', '<style>', ...prepared.slice(1), '</style>'];
|
}
|
return [
|
...lines.slice(0, closeIdx),
|
...prepared,
|
...lines.slice(closeIdx),
|
];
|
}
|
|
function findLastStyleCloseLine(lines) {
|
for (let i = lines.length - 1; i >= 0; i--) {
|
if (/<\/style\s*>/.test(lines[i])) return i;
|
}
|
return -1;
|
}
|
|
function bakeParamValuesInCss(cssLines, paramValues) {
|
if (!paramValues || Object.keys(paramValues).length === 0) return cssLines;
|
return cssLines.map((line) => {
|
let out = line;
|
for (const [key, value] of Object.entries(paramValues)) {
|
const varName = `--p-${key}`;
|
out = out.replace(new RegExp(`var\\(${escapeRegExp(varName)}(?:,\\s*[^)]+)?\\)`, 'g'), String(value));
|
}
|
return out;
|
});
|
}
|
|
function sanitizeAcceptedSvelteCss(cssLines, variantNum, paramValues = null, rootTag = 'div') {
|
const css = String((cssLines || []).join('\n'));
|
if (!/data-impeccable-variant|impeccable-variant-ready/.test(css)) return cssLines;
|
|
const rules = parseCssRules(css);
|
const output = [];
|
for (const rule of rules) {
|
appendSanitizedCssRule(output, rule, variantNum, paramValues, rootTag);
|
}
|
return output.join('\n')
|
.split('\n')
|
.map((line) => line.trimEnd())
|
.filter((line) => line.trim() !== '');
|
}
|
|
function appendSanitizedCssRule(output, rule, variantNum, paramValues, rootTag) {
|
const prelude = rule.prelude.trim();
|
const body = rule.body.trim();
|
if (!prelude || !body || /--impeccable-variant-ready\s*:/.test(body)) return;
|
|
if (/^@scope\b/i.test(prelude)) {
|
if (/data-impeccable-variant/.test(prelude) && !selectorHasVariant(prelude, variantNum)) return;
|
const inner = parseCssRules(body);
|
for (const innerRule of inner) {
|
const rewrittenPrelude = rewriteAcceptedSvelteSelector(innerRule.prelude, variantNum, paramValues, rootTag, true);
|
if (!rewrittenPrelude || /--impeccable-variant-ready\s*:/.test(innerRule.body)) continue;
|
output.push(formatCssRule(rewrittenPrelude, innerRule.body.trim()));
|
}
|
return;
|
}
|
|
const rewrittenPrelude = rewriteAcceptedSvelteSelector(prelude, variantNum, paramValues, rootTag, false);
|
if (!rewrittenPrelude) return;
|
output.push(formatCssRule(rewrittenPrelude, body));
|
}
|
|
function parseCssRules(css) {
|
const rules = [];
|
const text = String(css || '');
|
let i = 0;
|
while (i < text.length) {
|
while (i < text.length && /\s/.test(text[i])) i++;
|
const preludeStart = i;
|
while (i < text.length && text[i] !== '{') i++;
|
if (i >= text.length) break;
|
const prelude = text.slice(preludeStart, i).trim();
|
i++;
|
const bodyStart = i;
|
let depth = 1;
|
let quote = null;
|
let comment = false;
|
while (i < text.length && depth > 0) {
|
const ch = text[i];
|
const next = text[i + 1];
|
if (comment) {
|
if (ch === '*' && next === '/') {
|
comment = false;
|
i += 2;
|
continue;
|
}
|
i++;
|
continue;
|
}
|
if (quote) {
|
if (ch === '\\') {
|
i += 2;
|
continue;
|
}
|
if (ch === quote) quote = null;
|
i++;
|
continue;
|
}
|
if (ch === '/' && next === '*') {
|
comment = true;
|
i += 2;
|
continue;
|
}
|
if (ch === '"' || ch === "'") {
|
quote = ch;
|
i++;
|
continue;
|
}
|
if (ch === '{') depth++;
|
else if (ch === '}') depth--;
|
i++;
|
}
|
const body = text.slice(bodyStart, Math.max(bodyStart, i - 1));
|
if (prelude) rules.push({ prelude, body });
|
}
|
return rules;
|
}
|
|
function rewriteAcceptedSvelteSelector(prelude, variantNum, paramValues, rootTag, fromScope) {
|
const selectors = splitSelectorList(prelude);
|
const rewritten = [];
|
for (const selector of selectors) {
|
const next = rewriteAcceptedSvelteSelectorPart(selector, variantNum, paramValues, rootTag, fromScope);
|
if (next) rewritten.push(next);
|
}
|
return rewritten.join(', ');
|
}
|
|
function rewriteAcceptedSvelteSelectorPart(selector, variantNum, paramValues, rootTag, fromScope) {
|
let out = selector.trim();
|
const hasVariant = /data-impeccable-variant/.test(out);
|
if (hasVariant && !selectorHasVariant(out, variantNum)) return '';
|
if (hasVariant) {
|
out = out.replace(variantSelectorRegex(variantNum), '');
|
out = out.replace(/\[data-impeccable-variant=(["']).*?\1\]/g, '');
|
}
|
|
const paramResult = rewriteParamSelectors(out, paramValues);
|
if (!paramResult.keep) return '';
|
out = paramResult.selector;
|
|
out = out
|
.replace(/:scope(?:\[[^\]]+\])?\s*>\s*/g, '')
|
.replace(/:scope(?:\[[^\]]+\])?/g, rootTag || '')
|
.replace(/\s+/g, ' ')
|
.trim();
|
|
out = out.replace(/^[>+~]\s*/, '').trim();
|
if (!out && (hasVariant || fromScope)) return rootTag || ':global(*)';
|
return out;
|
}
|
|
function rewriteParamSelectors(selector, paramValues) {
|
let keep = true;
|
const next = selector.replace(/\[data-p-([A-Za-z0-9_-]+)(?:=(["'])(.*?)\2)?\]/g, (_match, key, _quote, expected) => {
|
if (!paramValues || !Object.prototype.hasOwnProperty.call(paramValues, key)) return '';
|
const actual = paramValues[key];
|
if (expected != null && String(actual) !== String(expected)) {
|
keep = false;
|
return '';
|
}
|
if (expected == null && (actual === false || actual == null || actual === 'false' || actual === 'off' || actual === '0')) {
|
keep = false;
|
return '';
|
}
|
return '';
|
});
|
return { keep, selector: next };
|
}
|
|
|
function selectorHasVariant(selector, variantNum) {
|
return variantSelectorRegex(variantNum).test(selector);
|
}
|
|
function variantSelectorRegex(variantNum) {
|
return new RegExp(`\\[data-impeccable-variant=(["'])${escapeRegExp(String(variantNum))}\\1\\]`, 'g');
|
}
|
|
function formatCssRule(selector, body) {
|
return `${selector} { ${body.trim()} }`;
|
}
|
|
function escapeRegExp(value) {
|
return String(value).replace(/[.*+?^${}()|[\]\\]/g, '\\$&');
|
}
|
|
export function inlineSvelteComponentAccept(manifest, variantNum, paramValues = null, cwd = process.cwd()) {
|
const sourceFile = resolveSourceFile(manifest.sourceFile, cwd);
|
const variantPath = path.join(cwd, manifest.componentDir, `v${variantNum}.svelte`);
|
const resultBase = {
|
file: manifest.sourceFile,
|
sourceFile: manifest.sourceFile,
|
previewMode: 'svelte-component',
|
componentDir: manifest.componentDir,
|
carbonize: false,
|
};
|
if (!fs.existsSync(variantPath)) {
|
return { handled: false, error: `Variant ${variantNum} not found`, ...resultBase };
|
}
|
|
const { markup, cssLines } = parseSvelteComponentFile(fs.readFileSync(variantPath, 'utf-8'));
|
if (manifest.mode === 'insert') {
|
return inlineSvelteComponentInsertAccept({
|
manifest,
|
markup,
|
cssLines,
|
variantNum,
|
paramValues,
|
sourceFile,
|
resultBase,
|
cwd,
|
});
|
}
|
|
const rootTag = matchOpeningTag(markup)?.tag || 'div';
|
const contract = manifest.propContract || [];
|
const compiler = loadSvelteCompiler(cwd);
|
const mergedMarkup = mergeOriginalTopLevelAttrs(markup, manifest.originalMarkup || '');
|
|
// Restore props back to route expressions. Contract v2 restores through the
|
// AST so a prop used without braces (each headers, attribute positions)
|
// still maps back to its original expression; v1 falls back to the textual
|
// placeholder swap.
|
let restoredText;
|
if (Number(manifest.contractVersion) === 2 && compiler) {
|
const restored = restoreSvelteMarkup(mergedMarkup, contract, compiler.parse);
|
if (!restored.ok) {
|
return { handled: false, error: 'Accepted variant does not parse: ' + restored.reason, ...resultBase };
|
}
|
restoredText = restored.markup;
|
} else {
|
restoredText = substitutePropsWithExprs(mergedMarkup, contract);
|
}
|
const restoredMarkup = restoredText.split('\n').map((line) => line.trimEnd());
|
|
const sourceContent = fs.readFileSync(sourceFile, 'utf-8');
|
const sourceLines = sourceContent.split('\n');
|
const start = Number(manifest.sourceStartLine) - 1;
|
const end = Number(manifest.sourceEndLine) - 1;
|
if (!Number.isInteger(start) || !Number.isInteger(end) || start < 0 || end < start || end >= sourceLines.length) {
|
return { handled: false, error: 'Invalid source line range for ' + manifest.sourceFile, ...resultBase };
|
}
|
|
const indent = sourceLines[start].match(/^(\s*)/)?.[1] || '';
|
const indentedMarkup = reindentPreservingStructure(restoredMarkup, indent);
|
|
let newLines = [
|
...sourceLines.slice(0, start),
|
...indentedMarkup,
|
...sourceLines.slice(end + 1),
|
];
|
|
// Selectors that were already unused before this accept are the user's
|
// pre-existing code; the pruning pass must not touch them.
|
const preUnused = compiler ? collectUnusedSelectors(sourceContent, compiler.compile) : new Set();
|
|
// Bake params (declared kinds from params.json drive branch pruning), then
|
// MERGE into the component's existing style block: matching selectors are
|
// replaced, new ones appended. Appending alone is how superseded rules used
|
// to survive their own replacement.
|
const declaredParams = readDeclaredParams(manifest, variantNum, cwd);
|
let variantCss = cssLines.join('\n');
|
if (/data-impeccable-variant|impeccable-variant-ready/.test(variantCss)) {
|
// Defensive: strip preview-wrapper selectors that authoring rules forbid
|
// on this path but an off-spec agent may still emit.
|
variantCss = sanitizeAcceptedSvelteCss(cssLines, variantNum, paramValues, rootTag).join('\n');
|
}
|
const bakedCss = bakeParamValues(variantCss, declaredParams, paramValues || {});
|
const cssStats = { replaced: 0, appended: 0, pruned: [], superseded: [] };
|
if (bakedCss.trim()) {
|
const merged = mergeCssIntoSvelteSource(newLines.join('\n'), bakedCss);
|
newLines = merged.text.split('\n');
|
cssStats.replaced = merged.replaced;
|
cssStats.appended = merged.appended;
|
}
|
|
let finalText = newLines.join('\n');
|
|
// Preview truth: the detached preview never applied the source rules that
|
// styled the replaced selection, so the user approved a design without
|
// them. Any seeded selector the variant did not re-declare is superseded;
|
// left in place it re-attaches through kept class names (the accepted root
|
// keeps its original classes) and re-layouts markup it no longer owns.
|
//
|
// Removal is bounded by ownership: a selector whose classes are still used
|
// by route markup OUTSIDE the replaced region does not belong to the pick
|
// alone, and removing it would strip styling from markup this accept never
|
// touched. Keeping it risks a visible re-attachment quirk on the accepted
|
// region; deleting it breaks the rest of the route. Keep it.
|
const outsideMarkup = [...sourceLines.slice(0, start), ...sourceLines.slice(end + 1)]
|
.join('\n')
|
.replace(/<style\b[^>]*>[\s\S]*?<\/style\s*>/gi, '');
|
const outsideClasses = new Set();
|
{
|
const attrRe = /class\s*=\s*(["'])(.*?)\1/g;
|
let cm;
|
while ((cm = attrRe.exec(outsideMarkup))) {
|
for (const cls of cm[2].split(/\s+/)) if (cls && !cls.includes('{')) outsideClasses.add(cls);
|
}
|
const directiveRe = /class:([A-Za-z0-9_-]+)/g;
|
while ((cm = directiveRe.exec(outsideMarkup))) outsideClasses.add(cm[1]);
|
}
|
const usedOutsideReplacedRegion = (selector) => {
|
const classTokenRe = /\.([A-Za-z0-9_-]+)/g;
|
let tm;
|
while ((tm = classTokenRe.exec(selector))) {
|
if (outsideClasses.has(tm[1])) return true;
|
}
|
return false;
|
};
|
const incomingSelectors = collectAllSelectors(bakedCss);
|
const superseded = (manifest.seededSelectors || [])
|
.map((selector) => normalizeSelector(selector))
|
.filter((selector) => selector && !incomingSelectors.has(selector) && !usedOutsideReplacedRegion(selector));
|
if (superseded.length > 0) {
|
const scrubbed = removeSelectorsFromSvelteSource(finalText, new Set(superseded));
|
finalText = scrubbed.text;
|
cssStats.superseded = scrubbed.removed;
|
}
|
|
if (compiler) {
|
const pruned = pruneUnusedSelectors(finalText, compiler.compile, { skipSelectors: preUnused });
|
finalText = pruned.source;
|
cssStats.pruned = pruned.removed;
|
}
|
|
// Postcondition: no selector from the user's pre-accept CSS may vanish
|
// unless the compiler-driven prune or the preview-truth supersession
|
// deliberately removed it. This turns any parser or reconciler defect into
|
// a loud refusal instead of silent damage to a hand-written style block.
|
const lostSelectors = findLostSelectors(sourceContent, finalText, [
|
...cssStats.pruned,
|
...cssStats.superseded,
|
]);
|
if (lostSelectors.length > 0) {
|
return {
|
handled: false,
|
error: 'CSS reconciliation would lose selectors from the existing style block: '
|
+ lostSelectors.join(', ')
|
+ '. Source not modified; accept the variant manually.',
|
mode: 'error',
|
...resultBase,
|
};
|
}
|
|
try {
|
fs.writeFileSync(sourceFile, finalText, 'utf-8');
|
} catch (err) {
|
return { handled: false, error: 'Failed to write Svelte source: ' + err.message, ...resultBase };
|
}
|
removeSvelteComponentSession(manifest.id, cwd);
|
|
const verify = verifyAcceptedSource(finalText);
|
return {
|
handled: true,
|
css: cssStats,
|
verify,
|
...resultBase,
|
};
|
}
|
|
/** Re-indent a block onto `indent` while preserving its internal structure. */
|
export function reindentPreservingStructure(lines, indent) {
|
const nonEmpty = lines.filter((line) => line.trim() !== '');
|
if (nonEmpty.length === 0) return lines.map(() => '');
|
const minIndent = Math.min(...nonEmpty.map((line) => (line.match(/^\s*/) || [''])[0].length));
|
return lines.map((line) => {
|
if (line.trim() === '') return '';
|
const current = (line.match(/^\s*/) || [''])[0].length;
|
return indent + line.slice(Math.min(minIndent, current));
|
});
|
}
|
|
function styleBlockText(sourceText) {
|
const match = String(sourceText || '').match(/<style\b[^>]*>([\s\S]*?)<\/style\s*>/i);
|
return match ? match[1] : '';
|
}
|
|
/**
|
* Remove every rule whose (normalized) selector list is fully contained in
|
* `selectors` from the component's style block, at any at-rule nesting depth.
|
* Rules that mix doomed and surviving selectors keep the survivors.
|
*/
|
export function removeSelectorsFromSvelteSource(sourceText, selectors) {
|
const text = String(sourceText || '');
|
const styleRe = /<style\b[^>]*>([\s\S]*?)<\/style\s*>/gi;
|
let lastMatch = null;
|
let m;
|
while ((m = styleRe.exec(text))) lastMatch = m;
|
if (!lastMatch) return { text, removed: [] };
|
|
const removed = [];
|
const transform = (nodes) => {
|
const kept = [];
|
for (const node of nodes) {
|
if (node.type === 'rule') {
|
const survivors = [];
|
for (const selector of splitSelectorList(node.prelude)) {
|
if (selectors.has(normalizeSelector(selector))) removed.push(normalizeSelector(selector));
|
else survivors.push(selector);
|
}
|
if (survivors.length > 0) kept.push({ ...node, prelude: survivors.join(', ') });
|
} else if (node.type === 'at' && node.children) {
|
const children = transform(node.children);
|
if (children.length > 0) kept.push({ ...node, children });
|
} else {
|
kept.push(node);
|
}
|
}
|
return kept;
|
};
|
|
const nodes = transform(parseStylesheet(lastMatch[1]));
|
if (removed.length === 0) return { text, removed };
|
const openTag = lastMatch[0].slice(0, lastMatch[0].indexOf('>') + 1);
|
const rebuilt = `${openTag}\n${serializeNodes(nodes).split('\n').map((l) => (l.trim() ? ' ' + l : '')).join('\n')}\n</style>`;
|
return {
|
text: text.slice(0, lastMatch.index) + rebuilt + text.slice(lastMatch.index + lastMatch[0].length),
|
removed,
|
};
|
}
|
|
export function findLostSelectors(beforeSource, afterSource, prunedSelectors = []) {
|
const before = collectAllSelectors(styleBlockText(beforeSource));
|
const after = collectAllSelectors(styleBlockText(afterSource));
|
const pruned = new Set((prunedSelectors || []).map((s) => normalizeSelector(s)));
|
const lost = [];
|
for (const selector of before) {
|
if (!after.has(selector) && !pruned.has(selector)) lost.push(selector);
|
}
|
return lost;
|
}
|
|
function readDeclaredParams(manifest, variantNum, cwd) {
|
try {
|
const raw = JSON.parse(fs.readFileSync(path.join(cwd, manifest.componentDir, 'params.json'), 'utf-8'));
|
const list = raw?.[String(variantNum)];
|
return Array.isArray(list) ? list : [];
|
} catch {
|
return [];
|
}
|
}
|
|
/**
|
* Merge CSS into a svelte component's top-level style block (created when
|
* absent), replacing rules whose selectors match and appending the rest.
|
*/
|
export function mergeCssIntoSvelteSource(sourceText, incomingCss) {
|
const text = String(sourceText || '');
|
const styleRe = /<style\b[^>]*>([\s\S]*?)<\/style\s*>/gi;
|
let lastMatch = null;
|
let m;
|
while ((m = styleRe.exec(text))) lastMatch = m;
|
|
if (!lastMatch) {
|
const { css, replaced, appended } = reconcileCss('', incomingCss);
|
return {
|
text: `${text.replace(/\s*$/, '')}\n\n<style>\n${indentCssBlock(css)}\n</style>\n`,
|
replaced,
|
appended,
|
};
|
}
|
|
const inner = lastMatch[1];
|
const { css, replaced, appended } = reconcileCss(inner, incomingCss);
|
const openTag = lastMatch[0].slice(0, lastMatch[0].indexOf('>') + 1);
|
const replacedBlock = `${openTag}\n${indentCssBlock(css)}\n</style>`;
|
return {
|
text: text.slice(0, lastMatch.index) + replacedBlock + text.slice(lastMatch.index + lastMatch[0].length),
|
replaced,
|
appended,
|
};
|
}
|
|
function indentCssBlock(css) {
|
return String(css || '')
|
.split('\n')
|
.map((line) => (line.trim() === '' ? '' : ' ' + line))
|
.join('\n');
|
}
|
|
function inlineSvelteComponentInsertAccept({
|
manifest,
|
markup,
|
cssLines,
|
variantNum,
|
paramValues,
|
sourceFile,
|
resultBase,
|
cwd,
|
}) {
|
if (!svelteMarkupHasVisibleContent(markup)) {
|
return { handled: false, error: 'Accepted Svelte insert variant is empty', ...resultBase };
|
}
|
if (/\bdata-impeccable-[\w-]*\s*=/.test(markup)) {
|
return { handled: false, error: 'Accepted Svelte insert variant contains preview-only data-impeccable attributes', ...resultBase };
|
}
|
|
const rootTag = matchOpeningTag(markup)?.tag || 'div';
|
const restoredMarkup = String(markup || '')
|
.split('\n')
|
.map((line) => line.trimEnd());
|
const sourceContent = fs.readFileSync(sourceFile, 'utf-8');
|
const sourceLines = sourceContent.split('\n');
|
const insertIndex = Number(manifest.insertLine) - 1;
|
if (!Number.isInteger(insertIndex) || insertIndex < 0 || insertIndex > sourceLines.length) {
|
return { handled: false, error: 'Invalid insert line for ' + manifest.sourceFile, ...resultBase };
|
}
|
|
const nearbyLine = sourceLines[insertIndex] ?? sourceLines[insertIndex - 1] ?? '';
|
const indent = nearbyLine.match(/^(\s*)/)?.[1] || '';
|
const indentedMarkup = reindentPreservingStructure(restoredMarkup, indent);
|
|
let newLines = [
|
...sourceLines.slice(0, insertIndex),
|
...indentedMarkup,
|
...sourceLines.slice(insertIndex),
|
];
|
|
let variantCss = cssLines.join('\n');
|
if (/data-impeccable-variant|impeccable-variant-ready/.test(variantCss)) {
|
variantCss = sanitizeAcceptedSvelteCss(cssLines, variantNum, paramValues, rootTag).join('\n');
|
}
|
const declaredParams = readDeclaredParams(manifest, variantNum, cwd);
|
const bakedCss = bakeParamValues(variantCss, declaredParams, paramValues || {});
|
if (bakedCss.trim()) {
|
const merged = mergeCssIntoSvelteSource(newLines.join('\n'), bakedCss);
|
newLines = merged.text.split('\n');
|
}
|
|
try {
|
fs.writeFileSync(sourceFile, newLines.join('\n'), 'utf-8');
|
} catch (err) {
|
return { handled: false, error: 'Failed to write Svelte source: ' + err.message, ...resultBase };
|
}
|
removeSvelteComponentSession(manifest.id, cwd);
|
|
const verify = verifyAcceptedSource(newLines.join('\n'));
|
return {
|
handled: true,
|
verify,
|
...resultBase,
|
};
|
}
|
|
function svelteMarkupHasVisibleContent(markup) {
|
const text = String(markup || '')
|
.replace(/<script[\s\S]*?<\/script>/gi, '')
|
.replace(/<style[\s\S]*?<\/style>/gi, '')
|
.replace(/<!--[\s\S]*?-->/g, '')
|
.replace(/<[^>]+>/g, ' ')
|
.replace(/\s+/g, ' ')
|
.trim();
|
if (text.length > 0) return true;
|
return /<(img|svg|canvas|video|audio|picture|input|button|select|textarea)\b/i.test(markup || '');
|
}
|
|
function mergeOriginalTopLevelAttrs(markup, originalMarkup) {
|
const variantOpen = matchOpeningTag(markup);
|
const originalOpen = matchOpeningTag(originalMarkup);
|
if (!variantOpen || !originalOpen) return markup;
|
if (variantOpen.tag.toLowerCase() !== originalOpen.tag.toLowerCase()) return markup;
|
|
const variantAttrs = parseAttrSegments(variantOpen.attrs);
|
const originalAttrs = parseAttrSegments(originalOpen.attrs);
|
const additions = [];
|
let attrs = variantOpen.attrs;
|
|
const originalClass = originalAttrs.get('class');
|
const variantClass = variantAttrs.get('class');
|
if (originalClass && variantClass) {
|
const merged = mergeStaticClassAttr(originalClass, variantClass);
|
if (merged) {
|
attrs = attrs.slice(0, variantClass.start) + merged + attrs.slice(variantClass.end);
|
variantAttrs.set('class', { ...variantClass, raw: merged });
|
}
|
} else if (originalClass && !variantClass) {
|
additions.push(originalClass.raw);
|
}
|
|
for (const [name, attr] of originalAttrs) {
|
if (name === 'class') continue;
|
if (!variantAttrs.has(name)) additions.push(attr.raw);
|
}
|
|
if (additions.length === 0 && attrs === variantOpen.attrs) return markup;
|
const nextOpen = variantOpen.prefix
|
+ variantOpen.tag
|
+ attrs
|
+ additions.map((attr) => ' ' + attr.trim()).join('')
|
+ variantOpen.close;
|
return markup.slice(0, variantOpen.index) + nextOpen + markup.slice(variantOpen.index + variantOpen.raw.length);
|
}
|
|
function matchOpeningTag(markup) {
|
const match = String(markup || '').match(/^(\s*<)([A-Za-z][\w:-]*)([^>]*?)(\/?>)/);
|
if (!match) return null;
|
return {
|
raw: match[0],
|
prefix: match[1],
|
tag: match[2],
|
attrs: match[3] || '',
|
close: match[4],
|
index: match.index || 0,
|
};
|
}
|
|
function parseAttrSegments(attrs) {
|
const out = new Map();
|
const re = /([A-Za-z_:][\w:.-]*)(?:\s*=\s*(?:"[^"]*"|'[^']*'|\{[^}]*\}|[^\s"'>=]+))?/g;
|
let match;
|
while ((match = re.exec(attrs))) {
|
const raw = match[0];
|
const name = match[1];
|
out.set(name, {
|
name,
|
raw,
|
start: match.index,
|
end: match.index + raw.length,
|
});
|
}
|
return out;
|
}
|
|
function mergeStaticClassAttr(originalClass, variantClass) {
|
const originalValue = originalClass.raw.match(/class\s*=\s*(["'])(.*?)\1/);
|
const variantValue = variantClass.raw.match(/class\s*=\s*(["'])(.*?)\1/);
|
if (!originalValue || !variantValue) return null;
|
const quote = variantValue[1];
|
const classes = [
|
...variantValue[2].split(/\s+/),
|
...originalValue[2].split(/\s+/),
|
].filter(Boolean);
|
return `class=${quote}${[...new Set(classes)].join(' ')}${quote}`;
|
}
|
|
export function removeSvelteComponentSession(id, cwd = process.cwd()) {
|
const dir = componentSessionDir(id, cwd);
|
try {
|
fs.rmSync(dir, { recursive: true, force: true });
|
} catch { /* non-fatal */ }
|
}
|
|
/**
|
* Compile-check every variant component of a session with the app's own
|
* compiler, BEFORE the browser ever imports them. A variant that does not
|
* compile (the classic: a second top-level <style> appended next to the
|
* seeded one) used to surface as a red Vite overlay in the user's page plus
|
* a mount-failure round trip; bounced at publish time it is a private
|
* agent-side fix with the exact file and line.
|
*/
|
export function compileCheckVariants(id, cwd = process.cwd()) {
|
const manifest = findSvelteComponentManifest(id, cwd);
|
if (!manifest || !manifest.manifestPath) return { ok: true, failures: [], checked: 0 };
|
const compiler = loadSvelteCompiler(cwd);
|
if (!compiler || typeof compiler.compile !== 'function') return { ok: true, failures: [], checked: 0 };
|
const sessionDir = path.dirname(manifest.manifestPath);
|
const failures = [];
|
let checked = 0;
|
let entries = [];
|
try { entries = fs.readdirSync(sessionDir); } catch { return { ok: true, failures: [], checked: 0 }; }
|
for (const name of entries) {
|
if (!/^v\d+\.svelte$/.test(name)) continue;
|
checked++;
|
try {
|
compiler.compile(fs.readFileSync(path.join(sessionDir, name), 'utf-8'), { generate: false });
|
} catch (err) {
|
failures.push({
|
file: `${manifest.componentDir}/${name}`,
|
line: err?.start?.line ?? null,
|
column: err?.start?.column ?? null,
|
message: String(err?.message || err).split('\n')[0].slice(0, 300),
|
});
|
}
|
}
|
return { ok: failures.length === 0, failures, checked };
|
}
|
|
/**
|
* Snapshot the agent-authored variant files into a fresh revision directory
|
* and stamp the manifest. Called by the server on every publish (`done`
|
* reply) for a component session; the browser imports from the revision dir,
|
* so the dev server can never serve a stale compile of a republished file.
|
*/
|
export function bumpSvelteComponentPreviewRevision(id, cwd = process.cwd()) {
|
const manifest = findSvelteComponentManifest(id, cwd);
|
if (!manifest || !manifest.manifestPath) return null;
|
const sessionDir = path.dirname(manifest.manifestPath);
|
const revision = Number(manifest.revision || 0) + 1;
|
const revDirName = `r${revision}`;
|
const revDir = path.join(sessionDir, revDirName);
|
try {
|
fs.mkdirSync(revDir, { recursive: true });
|
let entries = [];
|
try { entries = fs.readdirSync(sessionDir, { withFileTypes: true }); } catch { /* empty */ }
|
for (const entry of entries) {
|
if (!entry.isFile()) continue;
|
if (entry.name === 'manifest.json') continue;
|
fs.copyFileSync(path.join(sessionDir, entry.name), path.join(revDir, entry.name));
|
}
|
// Previous revision dirs are dead the moment a new one exists.
|
for (const entry of entries) {
|
if (entry.isDirectory() && /^r\d+$/.test(entry.name) && entry.name !== revDirName) {
|
try { fs.rmSync(path.join(sessionDir, entry.name), { recursive: true, force: true }); } catch { /* non-fatal */ }
|
}
|
}
|
const relSessionDir = path.relative(cwd, sessionDir).split(path.sep).join('/');
|
const updated = {
|
...manifest,
|
revision,
|
revisionDir: `${relSessionDir}/${revDirName}`,
|
revisionDirAbs: revDir.split(path.sep).join('/'),
|
};
|
delete updated.manifestPath;
|
fs.writeFileSync(manifest.manifestPath, JSON.stringify(updated, null, 2) + '\n', 'utf-8');
|
return { revision, revisionDir: updated.revisionDir };
|
} catch {
|
return null;
|
}
|
}
|
|
/**
|
* Stop-path sweep. The whole `node_modules/.impeccable-live` tree is
|
* impeccable-owned and gitignored, so once no session should survive there is
|
* nothing left worth keeping: the per-session dirs, the generated
|
* `__runtime.js`, and the parent directory all go. The old per-entry loop
|
* skipped `__*` entries and the parent, which left the runtime shim and an
|
* empty directory in every project that ever ran live mode once.
|
*/
|
export function removeAllSvelteComponentSessions(cwd = process.cwd()) {
|
for (const rootRel of [SVELTE_COMPONENT_ROOT, LEGACY_SVELTE_COMPONENT_ROOT]) {
|
const root = path.join(cwd, rootRel);
|
if (!fs.existsSync(root)) continue;
|
try {
|
fs.rmSync(root, { recursive: true, force: true });
|
} catch { /* non-fatal */ }
|
}
|
}
|
|
/**
|
* Boot-path sweep. A restart must not delete the tree wholesale: sessions
|
* recorded in the session store may still be mid-generation. Remove only the
|
* session dirs whose id has no active snapshot, then drop `__runtime.js` and
|
* the parent directory when nothing is left to serve.
|
*
|
* @param {Iterable<string>} activeIds session ids that must be preserved
|
* @returns {{ removed: string[], removedRoot: boolean, kept: string[] }}
|
*/
|
export function sweepInactiveSvelteComponentSessions(activeIds = [], cwd = process.cwd()) {
|
const result = { removed: [], removedRoot: false, kept: [] };
|
const active = new Set();
|
for (const id of activeIds || []) {
|
if (typeof id === 'string' && id) active.add(id);
|
}
|
|
for (const rootRel of [SVELTE_COMPONENT_ROOT, LEGACY_SVELTE_COMPONENT_ROOT]) {
|
const root = path.join(cwd, rootRel);
|
if (!fs.existsSync(root)) continue;
|
|
let entries;
|
try {
|
entries = fs.readdirSync(root, { withFileTypes: true });
|
} catch {
|
continue;
|
}
|
|
let keptHere = 0;
|
for (const entry of entries) {
|
if (!entry.isDirectory()) continue;
|
if (entry.name.startsWith('__')) continue;
|
if (active.has(entry.name)) {
|
result.kept.push(entry.name);
|
keptHere++;
|
continue;
|
}
|
try {
|
fs.rmSync(path.join(root, entry.name), { recursive: true, force: true });
|
result.removed.push(entry.name);
|
} catch {
|
// Could not remove it, so it still occupies the tree; treat it as kept
|
// so the parent directory is not torn out from under it.
|
result.kept.push(entry.name);
|
keptHere++;
|
}
|
}
|
|
if (keptHere === 0) {
|
try {
|
fs.rmSync(root, { recursive: true, force: true });
|
result.removedRoot = true;
|
} catch { /* non-fatal */ }
|
}
|
}
|
return result;
|
}
|
|
export function deferredAcceptsPath(cwd = process.cwd()) {
|
const key = createHash('sha1').update(path.resolve(cwd)).digest('hex').slice(0, 16);
|
return path.join(os.tmpdir(), 'impeccable-live', key, 'deferred-svelte-component-accepts.json');
|
}
|
|
export function readDeferredAccepts(cwd = process.cwd()) {
|
const file = deferredAcceptsPath(cwd);
|
try {
|
return JSON.parse(fs.readFileSync(file, 'utf-8'));
|
} catch {
|
return { accepts: [] };
|
}
|
}
|
|
export function writeDeferredAccept(entry, cwd = process.cwd()) {
|
const file = deferredAcceptsPath(cwd);
|
fs.mkdirSync(path.dirname(file), { recursive: true });
|
const data = readDeferredAccepts(cwd);
|
data.accepts = (data.accepts || []).filter((item) => item.id !== entry.id);
|
data.accepts.push({ ...entry, createdAt: new Date().toISOString() });
|
fs.writeFileSync(file, JSON.stringify(data, null, 2) + '\n', 'utf-8');
|
}
|
|
export function applyDeferredSvelteComponentAccepts(cwd = process.cwd()) {
|
const file = deferredAcceptsPath(cwd);
|
const data = readDeferredAccepts(cwd);
|
const pending = Array.isArray(data.accepts) ? data.accepts : [];
|
const results = [];
|
const remaining = [];
|
for (const entry of pending) {
|
try {
|
const manifest = findSvelteComponentManifest(entry.id, cwd);
|
if (!manifest) {
|
results.push({ id: entry.id, ok: false, error: 'manifest not found' });
|
remaining.push(entry);
|
continue;
|
}
|
const result = inlineSvelteComponentAccept(
|
manifest,
|
entry.variantNum,
|
entry.paramValues || null,
|
cwd,
|
);
|
results.push({ id: entry.id, ok: result.handled !== false, result });
|
if (result.handled === false) remaining.push(entry);
|
} catch (err) {
|
results.push({ id: entry.id, ok: false, error: err.message });
|
remaining.push(entry);
|
}
|
}
|
if (remaining.length > 0) {
|
fs.writeFileSync(file, JSON.stringify({ accepts: remaining }, null, 2) + '\n', 'utf-8');
|
} else {
|
try { fs.rmSync(file, { force: true }); } catch {}
|
}
|
return { applied: results.filter((r) => r.ok).length, failed: results.filter((r) => !r.ok).length, results };
|
}
|
|
export function buildSvelteComponentCssAuthoring(count) {
|
const variantNumbers = Array.from({ length: count }, (_, i) => i + 1);
|
return {
|
mode: 'svelte-component',
|
styleTag: null,
|
strategy: 'component-style-block',
|
rulePattern: '.semantic-class { ... }',
|
selectorExamples: variantNumbers.map(() => '.expense-row { padding: 22px; }'),
|
requirements: [
|
'Write each variant as a real Svelte component file (v1.svelte, v2.svelte, ...).',
|
'Keep the prop names from propContract; bind dynamic text with {propName}, not literal snapshot text.',
|
'Put variant CSS in the component <style> block using semantic class selectors.',
|
'Author param-driven CSS against var(--p-<id>, default) and [data-p-<id>] using :global(...) so the runtime knob values reach the mounted root.',
|
'Declare params in componentDir/params.json keyed by variant number (e.g. {"1": [...], "2": [...]}), NOT as a data-impeccable-params attribute.',
|
'Do not use @scope or data-impeccable-variant selectors in component files.',
|
'Do not edit the route source file during generation; only edit files under componentDir.',
|
],
|
forbidden: [
|
'Do not use @scope blocks in Svelte component variants.',
|
'Do not copy live DOM snapshot text into markup when propContract provides bindings.',
|
'Do not add data-impeccable-* attributes inside component files. Svelte parses { in attribute values as an expression, so data-impeccable-params with JSON breaks the build; use componentDir/params.json instead.',
|
],
|
paramsFile: 'params.json',
|
};
|
}
|
