Converting to Webpack. Stage 1.

1 files changed, 106 insertions, 0 deletions

diff --git a/webapp/non_npm_dependencies/katex/src/utils.js b/webapp/non_npm_dependencies/katex/src/utils.js
new file mode 100644
index 000000000..f9e57cc65
--- /dev/null
+++ b/webapp/non_npm_dependencies/katex/src/utils.js
@@ -0,0 +1,106 @@
+/**
+ * This file contains a list of utility functions which are useful in other
+ * files.
+ */
+
+/**
+ * Provide an `indexOf` function which works in IE8, but defers to native if
+ * possible.
+ */
+var nativeIndexOf = Array.prototype.indexOf;
+var indexOf = function(list, elem) {
+    if (list == null) {
+        return -1;
+    }
+    if (nativeIndexOf && list.indexOf === nativeIndexOf) {
+        return list.indexOf(elem);
+    }
+    var i = 0;
+    var l = list.length;
+    for (; i < l; i++) {
+        if (list[i] === elem) {
+            return i;
+        }
+    }
+    return -1;
+};
+
+/**
+ * Return whether an element is contained in a list
+ */
+var contains = function(list, elem) {
+    return indexOf(list, elem) !== -1;
+};
+
+/**
+ * Provide a default value if a setting is undefined
+ */
+var deflt = function(setting, defaultIfUndefined) {
+    return setting === undefined ? defaultIfUndefined : setting;
+};
+
+// hyphenate and escape adapted from Facebook's React under Apache 2 license
+
+var uppercase = /([A-Z])/g;
+var hyphenate = function(str) {
+    return str.replace(uppercase, "-$1").toLowerCase();
+};
+
+var ESCAPE_LOOKUP = {
+    "&": "&amp;",
+    ">": "&gt;",
+    "<": "&lt;",
+    "\"": "&quot;",
+    "'": "&#x27;",
+};
+
+var ESCAPE_REGEX = /[&><"']/g;
+
+function escaper(match) {
+    return ESCAPE_LOOKUP[match];
+}
+
+/**
+ * Escapes text to prevent scripting attacks.
+ *
+ * @param {*} text Text value to escape.
+ * @return {string} An escaped string.
+ */
+function escape(text) {
+    return ("" + text).replace(ESCAPE_REGEX, escaper);
+}
+
+/**
+ * A function to set the text content of a DOM element in all supported
+ * browsers. Note that we don't define this if there is no document.
+ */
+var setTextContent;
+if (typeof document !== "undefined") {
+    var testNode = document.createElement("span");
+    if ("textContent" in testNode) {
+        setTextContent = function(node, text) {
+            node.textContent = text;
+        };
+    } else {
+        setTextContent = function(node, text) {
+            node.innerText = text;
+        };
+    }
+}
+
+/**
+ * A function to clear a node.
+ */
+function clearNode(node) {
+    setTextContent(node, "");
+}
+
+module.exports = {
+    contains: contains,
+    deflt: deflt,
+    escape: escape,
+    hyphenate: hyphenate,
+    indexOf: indexOf,
+    setTextContent: setTextContent,
+    clearNode: clearNode,
+};