fix

book/node_modules/honkit/lib/output/modifiers/fetchRemoteImages.js

@@ -0,0 +1,37 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const path_1 = __importDefault(require("path"));
+const crc_1 = __importDefault(require("crc"));
+const editHTMLElement_1 = __importDefault(require("./editHTMLElement"));
+const fs_1 = __importDefault(require("../../utils/fs"));
+const location_1 = __importDefault(require("../../utils/location"));
+/**
+ Fetch all remote images
+ */
+function fetchRemoteImages(rootFolder, currentFile, $) {
+    const currentDirectory = path_1.default.dirname(currentFile);
+    return (0, editHTMLElement_1.default)($, "img", ($img) => {
+        let src = $img.attr("src");
+        const extension = path_1.default.extname(src);
+        if (!location_1.default.isExternal(src)) {
+            return;
+        }
+        // We avoid generating twice the same PNG
+        const hash = crc_1.default.crc32(src).toString(16);
+        const fileName = hash + extension;
+        const filePath = path_1.default.join(rootFolder, fileName);
+        return fs_1.default
+            .assertFile(filePath, () => {
+            return fs_1.default.download(src, filePath);
+        })
+            .then(() => {
+            // Convert to relative
+            src = location_1.default.relative(currentDirectory, fileName);
+            $img.replaceWith(`<img src="${src}" />`);
+        });
+    });
+}
+exports.default = fetchRemoteImages;