CEC-2587 Add edge_mask field (#217)

src/utils/strings.js

@@ -0,0 +1,13 @@
+export function trimIfMoreThan(maybeString, maxLength = 20, sfx = "") {
+  if (typeof maybeString == "string" && maybeString !== "") {
+    let toAppSfx = sfx
+    let toTrimLnth = maxLength - toAppSfx.length
+    if (maybeString.length <= maxLength) {
+      toAppSfx = ""
+      toTrimLnth = maxLength
+    }
+    return maybeString.substring(0, toTrimLnth) + toAppSfx
+  }
+
+  return ""
+}