feat: add support for @base being './'

Author: tplooker

lib/context.js

@@ -1050,7 +1050,7 @@ function _expandIri(activeCtx, value, relativeTo, localCtx, defined, options) {
   if(relativeTo.base && '@base' in activeCtx) {
     if(activeCtx['@base']) {
       // The null case preserves value as potentially relative
-      return prependBase(prependBase(options.base, activeCtx['@base']), value);
+      value = prependBase(prependBase(options.base, activeCtx['@base']), value);
     }
   } else if(relativeTo.base) {
     value = prependBase(options.base, value);

lib/expand.js

@@ -528,7 +528,6 @@ async function _expandObject({
         ]));
       }
       _validateTypeValue(value, options.isFrame);
-
       _addValue(
         expandedParent, '@type',
         _asArray(value).map(v =>

tests/misc.js

@@ -680,4 +680,24 @@ describe('expansionMap', () => {
 
     assert.equal(expansionMapCalled, true);
   });
+
+  it("should be called on relative iri when @base value is './'", async () => {
+    const docWithRelativeIriId = {
+      '@context': {
+        "@base": "./",
+      },
+      '@id': "absoluteiri",
+    };
+
+    let expansionMapCalled = false;
+    const expansionMap = info => {
+      if(info.relativeIri === '/absoluteiri') {
+        expansionMapCalled = true;
+      }
+    };
+
+    await jsonld.expand(docWithRelativeIriId, {expansionMap});
+
+    assert.equal(expansionMapCalled, true);
+  });
 });