fix: add support for content hash for light and webapp mode

src/hash.js

@@ -0,0 +1,69 @@
+/// @ts-check
+
+// Import types
+/** @typedef {import("webpack").Compilation} WebpackCompilation */
+
+const crypto = require('crypto');
+const url = require('url');
+
+/**
+ * Replaces [contenthash] and [fullhash] inside the given publicPath and assetPath
+ *
+ * @param {WebpackCompilation} compilation
+ * @param {undefined | string | Function} publicPath
+ * @param {string} assetPath
+ */
+function resolvePublicPath(compilation, publicPath, assetPath) {
+ const publicPathString =
+ publicPath && typeof publicPath === 'function'
+ ? compilation.getAssetPath(
+ compilation.outputOptions.publicPath || 'auto',
+ { hash: compilation.hash }
+ )
+ : publicPath;
+
+ const fullAssetPath = url.resolve(
+ appendSlash(publicPathString || 'auto'),
+ assetPath
+ );
+ return fullAssetPath;
+}
+
+/**
+ * Replaces [contenthash] and [fullhash] inside the given publicPath and assetPath
+ *
+ * @param {WebpackCompilation} compilation
+ * @param {string} assetPath
+ * @param {string} hash
+ */
+function replaceContentHash(compilation, assetPath, hash) {
+ return compilation.getAssetPath(assetPath, {
+ hash: compilation.hash || hash,
+ chunk: {
+ id: '1',
+ hash
+ },
+ contentHash: hash
+ });
+}
+
+/**
+ * Adds a slash to a url
+ * @param {string} url
+ */
+function appendSlash(url) {
+ return url && url.length && url.substr(-1, 1) !== '/' ? url + '/' : url;
+}
+
+/**
+ * Returns the content hash for the given file content
+ * @param {Buffer|string} file
+ */
+function getContentHash(file) {
+ return crypto
+ .createHash('sha256')
+ .update(file.toString('utf8'))
+ .digest('hex');
+}
+
+module.exports = { getContentHash, resolvePublicPath, replaceContentHash };