1 files changed, 177 insertions, 0 deletions
diff --git a/ext/mixed/js/core.js b/ext/mixed/js/core.js
new file mode 100644
index 00000000..b5911535
--- /dev/null
+++ b/ext/mixed/js/core.js
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) 2019  Alex Yatskov <alex@foosoft.net>
+ * Author: Alex Yatskov <alex@foosoft.net>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+
+/*
+ * Extension information
+ */
+
+function _extensionHasChrome() {
+    try {
+        return typeof chrome === 'object' && chrome !== null;
+    } catch (e) {
+        return false;
+    }
+}
+
+function _extensionHasBrowser() {
+    try {
+        return typeof browser === 'object' && browser !== null;
+    } catch (e) {
+        return false;
+    }
+}
+
+const EXTENSION_IS_BROWSER_EDGE = (
+    _extensionHasBrowser() &&
+    (!_extensionHasChrome() || (typeof chrome.runtime === 'undefined' && typeof browser.runtime !== 'undefined'))
+);
+
+if (EXTENSION_IS_BROWSER_EDGE) {
+    // Edge does not have chrome defined.
+    chrome = browser;
+}
+
+
+/*
+ * Error handling
+ */
+
+function errorToJson(error) {
+    return {
+        name: error.name,
+        message: error.message,
+        stack: error.stack
+    };
+}
+
+function jsonToError(jsonError) {
+    const error = new Error(jsonError.message);
+    error.name = jsonError.name;
+    error.stack = jsonError.stack;
+    return error;
+}
+
+function logError(error, alert) {
+    const manifest = chrome.runtime.getManifest();
+    let errorMessage = `${manifest.name} v${manifest.version} has encountered an error.\n`;
+    errorMessage += `Originating URL: ${window.location.href}\n`;
+
+    const errorString = `${error.toString ? error.toString() : error}`;
+    const stack = `${error.stack}`.trimRight();
+    errorMessage += (!stack.startsWith(errorString) ? `${errorString}\n${stack}` : `${stack}`);
+
+    errorMessage += '\n\nIssues can be reported at https://github.com/FooSoft/yomichan/issues';
+
+    console.error(errorMessage);
+
+    if (alert) {
+        window.alert(`${errorString}\n\nCheck the developer console for more details.`);
+    }
+}
+
+
+/*
+ * Common helpers
+ */
+
+function isObject(value) {
+    return typeof value === 'object' && value !== null && !Array.isArray(value);
+}
+
+function hasOwn(object, property) {
+    return Object.prototype.hasOwnProperty.call(object, property);
+}
+
+// toIterable is required on Edge for cross-window origin objects.
+function toIterable(value) {
+    if (typeof Symbol !== 'undefined' && typeof value[Symbol.iterator] !== 'undefined') {
+        return value;
+    }
+
+    if (value !== null && typeof value === 'object') {
+        const length = value.length;
+        if (typeof length === 'number' && Number.isFinite(length)) {
+            const array = [];
+            for (let i = 0; i < length; ++i) {
+                array.push(value[i]);
+            }
+            return array;
+        }
+    }
+
+    throw new Error('Could not convert to iterable');
+}
+
+
+/*
+ * Async utilities
+ */
+
+function promiseTimeout(delay, resolveValue) {
+    if (delay <= 0) {
+        return Promise.resolve(resolveValue);
+    }
+
+    let timer = null;
+    let promiseResolve = null;
+    let promiseReject = null;
+
+    const complete = (callback, value) => {
+        if (callback === null) { return; }
+        if (timer !== null) {
+            window.clearTimeout(timer);
+            timer = null;
+        }
+        promiseResolve = null;
+        promiseReject = null;
+        callback(value);
+    };
+
+    const resolve = (value) => complete(promiseResolve, value);
+    const reject = (value) => complete(promiseReject, value);
+
+    const promise = new Promise((resolve, reject) => {
+        promiseResolve = resolve;
+        promiseReject = reject;
+    });
+    timer = window.setTimeout(() => {
+        timer = null;
+        resolve(resolveValue);
+    }, delay);
+
+    promise.resolve = resolve;
+    promise.reject = reject;
+
+    return promise;
+}
+
+function stringReplaceAsync(str, regex, replacer) {
+    let match;
+    let index = 0;
+    const parts = [];
+    while ((match = regex.exec(str)) !== null) {
+        parts.push(str.substring(index, match.index), replacer(...match, match.index, str));
+        index = regex.lastIndex;
+    }
+    if (parts.length === 0) {
+        return Promise.resolve(str);
+    }
+    parts.push(str.substring(index));
+    return Promise.all(parts).then((v) => v.join(''));
+}