Keywords may not be used as prefixes

Author: gkellogg

lib/context.js

@@ -712,6 +712,12 @@ api.createTermDefinition = ({
         'jsonld.SyntaxError',
         {code: 'invalid term definition', context: localCtx});
     }
+    if(api.isKeyword(mapping['@id'])) {
+      throw new JsonLdError(
+        'Invalid JSON-LD syntax; keywords may not be used as prefixes',
+        'jsonld.SyntaxError',
+        {code: 'invalid term definition', context: localCtx});
+    }
     if(typeof value['@prefix'] === 'boolean') {
       mapping._prefix = value['@prefix'] === true;
     } else {

tests/test-common.js

@@ -123,8 +123,6 @@ const TEST_TYPES = {
         /expand-manifest.jsonld#tso11$/,
         // @nest
         /expand-manifest.jsonld#tn008$/,
-        // keywords
-        /expand-manifest.jsonld#tpr33$/,
         // direction
         /expand-manifest.jsonld#tdi01$/,
         /expand-manifest.jsonld#tdi02$/,
@@ -359,8 +357,6 @@ const TEST_TYPES = {
         /toRdf-manifest.jsonld#tso11$/,
         // @next
         /toRdf-manifest.jsonld#tn008$/,
-        // keywords
-        /toRdf-manifest.jsonld#tpr33$/,
         // direction
         /toRdf-manifest.jsonld#tdi01$/,
         /toRdf-manifest.jsonld#tdi02$/,