65 lines
2.4 KiB
Plaintext
65 lines
2.4 KiB
Plaintext
import path from "node:path";
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import { appendForwardSlash } from "@astrojs/internal-helpers/path";
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import { frontmatterRE } from "./utils.js";
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async function handleHotUpdate(ctx, { logger, compile, astroFileToCssAstroDeps, astroFileToCompileMetadata }) {
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const oldCode = astroFileToCompileMetadata.get(ctx.file)?.originalCode;
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const newCode = await ctx.read();
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if (oldCode && isStyleOnlyChanged(oldCode, newCode)) {
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logger.debug("watch", "style-only change");
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await compile(newCode, ctx.file);
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return ctx.modules.filter((mod) => mod.id?.includes("astro&type=style"));
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}
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for (const [astroFile, cssAstroDeps] of astroFileToCssAstroDeps) {
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if (cssAstroDeps.has(ctx.file)) {
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logger.info("watch", getShortName(ctx.file, ctx.server.config.root));
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const parentModules = ctx.server.moduleGraph.getModulesByFile(astroFile);
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if (parentModules) {
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for (const mod of parentModules) {
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ctx.server.moduleGraph.invalidateModule(mod);
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}
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}
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ctx.server.ws.send({ type: "full-reload", path: "*" });
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}
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}
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}
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const scriptRE = /<script(?:\s.*?)?>.*?<\/script>/gs;
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const styleRE = /<style(?:\s.*?)?>.*?<\/style>/gs;
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function isStyleOnlyChanged(oldCode, newCode) {
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if (oldCode === newCode)
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return false;
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let oldFrontmatter = "";
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let newFrontmatter = "";
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oldCode = oldCode.replace(frontmatterRE, (m) => (oldFrontmatter = m, ""));
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newCode = newCode.replace(frontmatterRE, (m) => (newFrontmatter = m, ""));
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if (oldFrontmatter !== newFrontmatter)
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return false;
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const oldScripts = [];
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const newScripts = [];
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oldCode = oldCode.replace(scriptRE, (m) => (oldScripts.push(m), ""));
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newCode = newCode.replace(scriptRE, (m) => (newScripts.push(m), ""));
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if (!isArrayEqual(oldScripts, newScripts))
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return false;
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const oldStyles = [];
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const newStyles = [];
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oldCode.match(styleRE)?.forEach((m) => oldStyles.push(m));
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newCode.match(styleRE)?.forEach((m) => newStyles.push(m));
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return oldStyles.length === newStyles.length && !isArrayEqual(oldStyles, newStyles);
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}
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function isArrayEqual(a, b) {
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if (a.length !== b.length) {
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return false;
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}
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for (let i = 0; i < a.length; i++) {
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if (a[i] !== b[i]) {
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return false;
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}
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}
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return true;
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}
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function getShortName(file, root) {
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return file.startsWith(appendForwardSlash(root)) ? path.posix.relative(root, file) : file;
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}
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export {
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handleHotUpdate
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};
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