Rename directory: ext -> extension

extension/src/lib/utils.ts

@@ -0,0 +1,42 @@
+export function getNextEllipsis(ellipsis: string): string {
+    if (ellipsis === "") return ".";
+    if (ellipsis === ".") return "..";
+    if (ellipsis === "..") return "...";
+    if (ellipsis === "...") return "";
+
+    return "";
+}
+
+/**
+ * Template literal tag function, JSON-encodes substitutions.
+ */
+export function stringify(
+    templateStrings: TemplateStringsArray,
+    ...substitutions: unknown[]
+) {
+    let formattedString = "";
+
+    for (const templateString of templateStrings) {
+        if (formattedString) {
+            formattedString += JSON.stringify(substitutions.shift());
+        }
+
+        formattedString += templateString;
+    }
+
+    return formattedString;
+}
+
+export function loadScript(
+    scriptUrl: string,
+    doc: Document = document
+): Promise<HTMLScriptElement> {
+    return new Promise((resolve, reject) => {
+        const scriptEl = doc.createElement("script");
+        scriptEl.src = scriptUrl;
+        (doc.head || doc.documentElement).append(scriptEl);
+
+        scriptEl.addEventListener("load", () => resolve(scriptEl));
+        scriptEl.addEventListener("error", () => reject());
+    });
+}