clean up project for use with npm install

dist/fontScale.js

@@ -0,0 +1,41 @@
+/** @module fontScale */
+
+/**
+ * Scale an element's font size so that it doesn't overflow the viewport.
+ * Note that some css may be required for this to work,
+ * for example setting `display: flex;` on the parent element,
+ * and this function relies on the element being visible.
+ * If you want to keep your element invisible until font scaling finishes,
+ * use `opacity: 0;`
+ * @param {HTMLElement} element the element to be scaled
+ * @param {Number} maxHeight maximum font size (which is equivalent to pixel hight)
+ * @returns {Number} the resulting font size
+ */
+export function fontScale(element,maxHeight=innerHeight){
+    return new Promise(function(resolve){
+        function scaleup(){
+            let size=parseInt(getComputedStyle(element).fontSize)
+            let bounds=element.getBoundingClientRect()
+            if(bounds.right<innerWidth && size<maxHeight){
+                element.style.fontSize=size+1+'px'
+                setTimeout(scaleup)
+            }else{
+                setTimeout(scaledown)
+            }
+            
+        }
+        function scaledown(){
+            let size=parseInt(getComputedStyle(element).fontSize)
+            let bounds=element.getBoundingClientRect()
+            if(bounds.right>innerWidth || size>maxHeight){
+                element.style.fontSize=size-1+'px'
+                setTimeout(scaledown)
+            }else{
+                resolve(size)
+            }
+        }
+        setTimeout(scaleup)
+    })
+}
+
+export default fontScale