61 lines
2.2 KiB
JavaScript
61 lines
2.2 KiB
JavaScript
import { parseAstroRequest } from "./query.js";
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import { frontmatterRE } from "./utils.js";
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async function handleHotUpdate(ctx, { logger, astroFileToCompileMetadata }) {
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for (const [astroFile, compileData] of astroFileToCompileMetadata) {
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const isUpdatedFileCssDep = compileData.css.some((css) => css.dependencies?.includes(ctx.file));
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if (isUpdatedFileCssDep) {
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astroFileToCompileMetadata.delete(astroFile);
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}
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}
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const oldCode = astroFileToCompileMetadata.get(ctx.file)?.originalCode;
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if (oldCode == null) return;
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const newCode = await ctx.read();
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if (isStyleOnlyChanged(oldCode, newCode)) {
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logger.debug("watch", "style-only change");
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astroFileToCompileMetadata.delete(ctx.file);
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return ctx.modules.filter((mod) => {
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if (!mod.id) {
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return false;
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}
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const { query } = parseAstroRequest(mod.id);
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return query.astro && query.type === "style" && !query.inline;
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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) 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) 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)) return false;
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const oldStyles = [];
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const newStyles = [];
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oldCode = oldCode.replace(styleRE, (m) => (oldStyles.push(m), ""));
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newCode = newCode.replace(styleRE, (m) => (newStyles.push(m), ""));
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if (oldCode !== newCode) return false;
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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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export {
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handleHotUpdate,
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isStyleOnlyChanged
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};
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