Apply suggestions fro @dlongleym code review

Co-Authored-By: Dave Longley <dlongley@digitalbazaar.com>

Author: 2 people

CHANGELOG.md

@@ -13,7 +13,7 @@
 - `@vocab` can be relative or a Compact IRI in 1.1, resolved against either a previous `@vocab`,
   `@base` or document base.
 - Better checking of absolute IRIs.
-- Terms that beging with a ':' are not considered absolute or compact IRIs.
+- Terms that beggining with a ':' are not considered absolute or compact IRIs.
 - Don't use terms with `@prefix`: false, or expanded term definitions to construct compact IRIs.
 
 ### Removed

lib/compact.js

@@ -827,9 +827,9 @@ api.compactIri = ({
   // If iri could be confused with a compact IRI using a term in this context,
   // signal an error
   for(const [term, td] of activeCtx.mappings) {
-    if(iri.startsWith(term + ':') && td._prefix) {
+    if(td._prefix && iri.startsWith(term + ':')) {
       throw new JsonLdError(
-        ('Absolute IRI "' + iri + '" confused with prefix "' + term + '"'),
+        (`Absolute IRI "${iri}" confused with prefix "${term}".`),
         'jsonld.SyntaxError',
         {code: 'IRI confused with prefix', context: activeCtx});
     }