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hsmusic-wiki - HSMusic - static wiki software cataloguing collaborative creation
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-rw-r--r--src/data/composite/wiki-data/gobbleSoupyFind.js39
-rw-r--r--src/data/composite/wiki-data/gobbleSoupyReverse.js39
-rw-r--r--src/data/composite/wiki-data/helpers/withResolvedReverse.js40
-rw-r--r--src/data/composite/wiki-data/helpers/withReverseList-template.js193
-rw-r--r--src/data/composite/wiki-data/index.js12
-rw-r--r--src/data/composite/wiki-data/inputSoupyFind.js28
-rw-r--r--src/data/composite/wiki-data/inputSoupyReverse.js32
-rw-r--r--src/data/composite/wiki-data/inputWikiData.js2
-rw-r--r--src/data/composite/wiki-data/splitContentNodesAround.js87
-rw-r--r--src/data/composite/wiki-data/withConstitutedArtwork.js60
-rw-r--r--src/data/composite/wiki-data/withContentNodes.js25
-rw-r--r--src/data/composite/wiki-data/withCoverArtDate.js23
-rw-r--r--src/data/composite/wiki-data/withParsedCommentaryEntries.js261
-rw-r--r--src/data/composite/wiki-data/withRecontextualizedContributionList.js1
-rw-r--r--src/data/composite/wiki-data/withResolvedAnnotatedReferenceList.js33
-rw-r--r--src/data/composite/wiki-data/withResolvedContribs.js3
-rw-r--r--src/data/composite/wiki-data/withResolvedReference.js26
-rw-r--r--src/data/composite/wiki-data/withResolvedReferenceList.js50
-rw-r--r--src/data/composite/wiki-data/withResolvedSeriesList.js131
-rw-r--r--src/data/composite/wiki-data/withReverseAnnotatedReferenceList.js116
-rw-r--r--src/data/composite/wiki-data/withReverseContributionList.js37
-rw-r--r--src/data/composite/wiki-data/withReverseReferenceList.js56
-rw-r--r--src/data/composite/wiki-data/withReverseSingleReferenceList.js50
-rw-r--r--src/data/composite/wiki-data/withUniqueReferencingThing.js41
24 files changed, 446 insertions, 939 deletions
diff --git a/src/data/composite/wiki-data/gobbleSoupyFind.js b/src/data/composite/wiki-data/gobbleSoupyFind.js
new file mode 100644
index 00000000..aec3f5b1
--- /dev/null
+++ b/src/data/composite/wiki-data/gobbleSoupyFind.js
@@ -0,0 +1,39 @@
+import {input, templateCompositeFrom} from '#composite';
+
+import {withPropertyFromObject} from '#composite/data';
+
+import inputSoupyFind, {getSoupyFindInputKey} from './inputSoupyFind.js';
+
+export default templateCompositeFrom({
+  annotation: `gobbleSoupyFind`,
+
+  inputs: {
+    find: inputSoupyFind(),
+  },
+
+  outputs: ['#find'],
+
+  steps: () => [
+    {
+      dependencies: [input('find')],
+      compute: (continuation, {
+        [input('find')]: find,
+      }) =>
+        (typeof find === 'function'
+          ? continuation.raiseOutput({
+              ['#find']: find,
+            })
+          : continuation({
+              ['#key']:
+                getSoupyFindInputKey(find),
+            })),
+    },
+
+    withPropertyFromObject({
+      object: 'find',
+      property: '#key',
+    }).outputs({
+      '#value': '#find',
+    }),
+  ],
+});
diff --git a/src/data/composite/wiki-data/gobbleSoupyReverse.js b/src/data/composite/wiki-data/gobbleSoupyReverse.js
new file mode 100644
index 00000000..86a1061c
--- /dev/null
+++ b/src/data/composite/wiki-data/gobbleSoupyReverse.js
@@ -0,0 +1,39 @@
+import {input, templateCompositeFrom} from '#composite';
+
+import {withPropertyFromObject} from '#composite/data';
+
+import inputSoupyReverse, {getSoupyReverseInputKey} from './inputSoupyReverse.js';
+
+export default templateCompositeFrom({
+  annotation: `gobbleSoupyReverse`,
+
+  inputs: {
+    reverse: inputSoupyReverse(),
+  },
+
+  outputs: ['#reverse'],
+
+  steps: () => [
+    {
+      dependencies: [input('reverse')],
+      compute: (continuation, {
+        [input('reverse')]: reverse,
+      }) =>
+        (typeof reverse === 'function'
+          ? continuation.raiseOutput({
+              ['#reverse']: reverse,
+            })
+          : continuation({
+              ['#key']:
+                getSoupyReverseInputKey(reverse),
+            })),
+    },
+
+    withPropertyFromObject({
+      object: 'reverse',
+      property: '#key',
+    }).outputs({
+      '#value': '#reverse',
+    }),
+  ],
+});
diff --git a/src/data/composite/wiki-data/helpers/withResolvedReverse.js b/src/data/composite/wiki-data/helpers/withResolvedReverse.js
new file mode 100644
index 00000000..818f60b7
--- /dev/null
+++ b/src/data/composite/wiki-data/helpers/withResolvedReverse.js
@@ -0,0 +1,40 @@
+// Actually execute a reverse function.
+
+import {input, templateCompositeFrom} from '#composite';
+
+import inputWikiData from '../inputWikiData.js';
+
+export default templateCompositeFrom({
+  annotation: `withReverseReferenceList`,
+
+  inputs: {
+    data: inputWikiData({allowMixedTypes: true}),
+    reverse: input({type: 'function'}),
+    options: input({type: 'object', defaultValue: null}),
+  },
+
+  outputs: ['#resolvedReverse'],
+
+  steps: () => [
+    {
+      dependencies: [
+        input.myself(),
+        input('data'),
+        input('reverse'),
+        input('options'),
+      ],
+
+      compute: (continuation, {
+        [input.myself()]: myself,
+        [input('data')]: data,
+        [input('reverse')]: reverseFunction,
+        [input('options')]: opts,
+      }) => continuation({
+        ['#resolvedReverse']:
+          (data
+            ? reverseFunction(myself, data, opts)
+            : reverseFunction(myself, opts)),
+      }),
+    },
+  ],
+});
diff --git a/src/data/composite/wiki-data/helpers/withReverseList-template.js b/src/data/composite/wiki-data/helpers/withReverseList-template.js
deleted file mode 100644
index 6ffd5d70..00000000
--- a/src/data/composite/wiki-data/helpers/withReverseList-template.js
+++ /dev/null
@@ -1,193 +0,0 @@
-// Baseline implementation shared by or underlying reverse lists.
-//
-// This is a very rudimentary "these compositions have basically the same
-// shape but slightly different guts midway through" kind of solution,
-// and should use compositional subroutines instead, once those are ready.
-//
-// But, until then, this has the same effect of avoiding code duplication
-// and clearly identifying differences.
-//
-// ---
-//
-// This implementation uses a global cache (via WeakMap) to attempt to speed
-// up subsequent similar accesses.
-//
-// This has absolutely not been rigorously tested with altering properties of
-// data objects in a wiki data array which is reused. If a new wiki data array
-// is used, a fresh cache will always be created.
-//
-
-import {input, templateCompositeFrom} from '#composite';
-import {sortByDate} from '#sort';
-import {stitchArrays} from '#sugar';
-
-import {exitWithoutDependency, raiseOutputWithoutDependency}
-  from '#composite/control-flow';
-import {withFlattenedList, withMappedList} from '#composite/data';
-
-import inputWikiData from '../inputWikiData.js';
-
-export default function withReverseList_template({
-  annotation,
-
-  propertyInputName,
-  outputName,
-
-  additionalInputs = {},
-
-  customCompositionSteps,
-}) {
-  // Mapping of reference list property to WeakMap.
-  // Each WeakMap maps a wiki data array to another weak map,
-  // which in turn maps each referenced thing to an array of
-  // things referencing it.
-  const caches = new Map();
-
-  return templateCompositeFrom({
-    annotation,
-
-    inputs: {
-      data: inputWikiData({
-        allowMixedTypes: true,
-      }),
-
-      [propertyInputName]: input({
-        type: 'string',
-      }),
-
-      ...additionalInputs,
-    },
-
-    outputs: [outputName],
-
-    steps: () => [
-      // Early exit with an empty array if the data list isn't available.
-      exitWithoutDependency({
-        dependency: input('data'),
-        value: input.value([]),
-      }),
-
-      // Raise an empty array (don't early exit) if the data list is empty.
-      raiseOutputWithoutDependency({
-        dependency: input('data'),
-        mode: input.value('empty'),
-        output: input.value({[outputName]: []}),
-      }),
-
-      // Check for an existing cache record which corresponds to this
-      // property input and input('data'). If it exists, query it for the
-      // current thing, and raise that; if it doesn't, create it, put it
-      // where it needs to be, and provide it so the next steps can fill
-      // it in.
-      {
-        dependencies: [input(propertyInputName), input('data'), input.myself()],
-
-        compute: (continuation, {
-          [input(propertyInputName)]: property,
-          [input('data')]: data,
-          [input.myself()]: myself,
-        }) => {
-          if (!caches.has(property)) {
-            const cache = new WeakMap();
-            caches.set(property, cache);
-
-            const cacheRecord = new WeakMap();
-            cache.set(data, cacheRecord);
-
-            return continuation({
-              ['#cacheRecord']: cacheRecord,
-            });
-          }
-
-          const cache = caches.get(property);
-
-          if (!cache.has(data)) {
-            const cacheRecord = new WeakMap();
-            cache.set(data, cacheRecord);
-
-            return continuation({
-              ['#cacheRecord']: cacheRecord,
-            });
-          }
-
-          return continuation.raiseOutput({
-            [outputName]:
-              cache.get(data).get(myself) ?? [],
-          });
-        },
-      },
-
-      ...customCompositionSteps(),
-
-      // Actually fill in the cache record. Since we're building up a *reverse*
-      // reference list, track connections in terms of the referenced thing.
-      // Although we gather all referenced things into a set and provide that
-      // for sorting purposes in the next step, we *don't* reprovide the cache
-      // record, because we're mutating that in-place - we'll just reuse its
-      // existing '#cacheRecord' dependency.
-      {
-        dependencies: ['#cacheRecord', '#referencingThings', '#referencedThings'],
-        compute: (continuation, {
-          ['#cacheRecord']: cacheRecord,
-          ['#referencingThings']: referencingThings,
-          ['#referencedThings']: referencedThings,
-        }) => {
-          const allReferencedThings = new Set();
-
-          stitchArrays({
-            referencingThing: referencingThings,
-            referencedThings: referencedThings,
-          }).forEach(({referencingThing, referencedThings}) => {
-              for (const referencedThing of referencedThings) {
-                if (cacheRecord.has(referencedThing)) {
-                  cacheRecord.get(referencedThing).push(referencingThing);
-                } else {
-                  cacheRecord.set(referencedThing, [referencingThing]);
-                  allReferencedThings.add(referencedThing);
-                }
-              }
-            });
-
-          return continuation({
-            ['#allReferencedThings']:
-              allReferencedThings,
-          });
-        },
-      },
-
-      // Sort the entries in the cache records, too, just by date - the rest of
-      // sorting should be handled outside of this composition, either preceding
-      // (changing the 'data' input) or following (sorting the output).
-      // Again we're mutating in place, so no need to reprovide '#cacheRecord'
-      // here.
-      {
-        dependencies: ['#cacheRecord', '#allReferencedThings'],
-        compute: (continuation, {
-          ['#cacheRecord']: cacheRecord,
-          ['#allReferencedThings']: allReferencedThings,
-        }) => {
-          for (const referencedThing of allReferencedThings) {
-            if (cacheRecord.has(referencedThing)) {
-              const referencingThings = cacheRecord.get(referencedThing);
-              sortByDate(referencingThings);
-            }
-          }
-
-          return continuation();
-        },
-      },
-
-      // Then just pluck out the current object from the now-filled cache record!
-      {
-        dependencies: ['#cacheRecord', input.myself()],
-        compute: (continuation, {
-          ['#cacheRecord']: cacheRecord,
-          [input.myself()]: myself,
-        }) => continuation({
-          [outputName]:
-            cacheRecord.get(myself) ?? [],
-        }),
-      },
-    ],
-  });
-}
diff --git a/src/data/composite/wiki-data/index.js b/src/data/composite/wiki-data/index.js
index 51d07384..38afc2ac 100644
--- a/src/data/composite/wiki-data/index.js
+++ b/src/data/composite/wiki-data/index.js
@@ -5,23 +5,25 @@
 //
 
 export {default as exitWithoutContribs} from './exitWithoutContribs.js';
+export {default as gobbleSoupyFind} from './gobbleSoupyFind.js';
+export {default as gobbleSoupyReverse} from './gobbleSoupyReverse.js';
 export {default as inputNotFoundMode} from './inputNotFoundMode.js';
+export {default as inputSoupyFind} from './inputSoupyFind.js';
+export {default as inputSoupyReverse} from './inputSoupyReverse.js';
 export {default as inputWikiData} from './inputWikiData.js';
+export {default as splitContentNodesAround} from './splitContentNodesAround.js';
 export {default as withClonedThings} from './withClonedThings.js';
+export {default as withConstitutedArtwork} from './withConstitutedArtwork.js';
+export {default as withContentNodes} from './withContentNodes.js';
 export {default as withContributionListSums} from './withContributionListSums.js';
 export {default as withCoverArtDate} from './withCoverArtDate.js';
 export {default as withDirectory} from './withDirectory.js';
-export {default as withParsedCommentaryEntries} from './withParsedCommentaryEntries.js';
 export {default as withRecontextualizedContributionList} from './withRecontextualizedContributionList.js';
 export {default as withRedatedContributionList} from './withRedatedContributionList.js';
 export {default as withResolvedAnnotatedReferenceList} from './withResolvedAnnotatedReferenceList.js';
 export {default as withResolvedContribs} from './withResolvedContribs.js';
 export {default as withResolvedReference} from './withResolvedReference.js';
 export {default as withResolvedReferenceList} from './withResolvedReferenceList.js';
-export {default as withResolvedSeriesList} from './withResolvedSeriesList.js';
-export {default as withReverseAnnotatedReferenceList} from './withReverseAnnotatedReferenceList.js';
-export {default as withReverseContributionList} from './withReverseContributionList.js';
 export {default as withReverseReferenceList} from './withReverseReferenceList.js';
-export {default as withReverseSingleReferenceList} from './withReverseSingleReferenceList.js';
 export {default as withThingsSortedAlphabetically} from './withThingsSortedAlphabetically.js';
 export {default as withUniqueReferencingThing} from './withUniqueReferencingThing.js';
diff --git a/src/data/composite/wiki-data/inputSoupyFind.js b/src/data/composite/wiki-data/inputSoupyFind.js
new file mode 100644
index 00000000..020f4990
--- /dev/null
+++ b/src/data/composite/wiki-data/inputSoupyFind.js
@@ -0,0 +1,28 @@
+import {input} from '#composite';
+import {anyOf, isFunction, isString} from '#validators';
+
+function inputSoupyFind() {
+  return input({
+    validate:
+      anyOf(
+        isFunction,
+        val => {
+          isString(val);
+
+          if (!val.startsWith('_soupyFind:')) {
+            throw new Error(`Expected soupyFind.input() token`);
+          }
+
+          return true;
+        }),
+  });
+}
+
+inputSoupyFind.input = key =>
+  input.value('_soupyFind:' + key);
+
+export default inputSoupyFind;
+
+export function getSoupyFindInputKey(value) {
+  return value.slice('_soupyFind:'.length);
+}
diff --git a/src/data/composite/wiki-data/inputSoupyReverse.js b/src/data/composite/wiki-data/inputSoupyReverse.js
new file mode 100644
index 00000000..0b0a23fe
--- /dev/null
+++ b/src/data/composite/wiki-data/inputSoupyReverse.js
@@ -0,0 +1,32 @@
+import {input} from '#composite';
+import {anyOf, isFunction, isString} from '#validators';
+
+function inputSoupyReverse() {
+  return input({
+    validate:
+      anyOf(
+        isFunction,
+        val => {
+          isString(val);
+
+          if (!val.startsWith('_soupyReverse:')) {
+            throw new Error(`Expected soupyReverse.input() token`);
+          }
+
+          return true;
+        }),
+  });
+}
+
+inputSoupyReverse.input = key =>
+  input.value('_soupyReverse:' + key);
+
+export default inputSoupyReverse;
+
+export function getSoupyReverseInputKey(value) {
+  return value.slice('_soupyReverse:'.length).replace(/\.unique$/, '');
+}
+
+export function doesSoupyReverseInputWantUnique(value) {
+  return value.endsWith('.unique');
+}
diff --git a/src/data/composite/wiki-data/inputWikiData.js b/src/data/composite/wiki-data/inputWikiData.js
index cf7a7c2c..b9021986 100644
--- a/src/data/composite/wiki-data/inputWikiData.js
+++ b/src/data/composite/wiki-data/inputWikiData.js
@@ -12,6 +12,6 @@ export default function inputWikiData({
 } = {}) {
   return input({
     validate: validateWikiData({referenceType, allowMixedTypes}),
-    acceptsNull: true,
+    defaultValue: null,
   });
 }
diff --git a/src/data/composite/wiki-data/splitContentNodesAround.js b/src/data/composite/wiki-data/splitContentNodesAround.js
new file mode 100644
index 00000000..6648d8e1
--- /dev/null
+++ b/src/data/composite/wiki-data/splitContentNodesAround.js
@@ -0,0 +1,87 @@
+import {input, templateCompositeFrom} from '#composite';
+import {splitContentNodesAround} from '#replacer';
+import {anyOf, isFunction, validateInstanceOf} from '#validators';
+
+import {withFilteredList, withMappedList, withUnflattenedList}
+  from '#composite/data';
+
+export default templateCompositeFrom({
+  annotation: `splitContentNodesAround`,
+
+  inputs: {
+    nodes: input({type: 'array'}),
+
+    around: input({
+      validate:
+        anyOf(isFunction, validateInstanceOf(RegExp)),
+    }),
+  },
+
+  outputs: ['#contentNodeLists'],
+
+  steps: () => [
+    {
+      dependencies: [input('nodes'), input('around')],
+
+      compute: (continuation, {
+        [input('nodes')]: nodes,
+        [input('around')]: splitter,
+      }) => continuation({
+        ['#nodes']:
+          Array.from(splitContentNodesAround(nodes, splitter)),
+      }),
+    },
+
+    withMappedList({
+      list: '#nodes',
+      map: input.value(node => node.type === 'separator'),
+    }).outputs({
+      '#mappedList': '#separatorFilter',
+    }),
+
+    withMappedList({
+      list: '#separatorFilter',
+      filter: '#separatorFilter',
+      map: input.value((_node, index) => index),
+    }),
+
+    withFilteredList({
+      list: '#mappedList',
+      filter: '#separatorFilter',
+    }).outputs({
+      '#filteredList': '#separatorIndices',
+    }),
+
+    {
+      dependencies: ['#nodes', '#separatorFilter'],
+
+      compute: (continuation, {
+        ['#nodes']: nodes,
+        ['#separatorFilter']: separatorFilter,
+      }) => continuation({
+        ['#nodes']:
+          nodes.map((node, index) =>
+            (separatorFilter[index]
+              ? null
+              : node)),
+      }),
+    },
+
+    {
+      dependencies: ['#separatorIndices'],
+      compute: (continuation, {
+        ['#separatorIndices']: separatorIndices,
+      }) => continuation({
+        ['#unflattenIndices']:
+          [0, ...separatorIndices],
+      }),
+    },
+
+    withUnflattenedList({
+      list: '#nodes',
+      indices: '#unflattenIndices',
+    }).outputs({
+      '#unflattenedList': '#contentNodeLists',
+    }),
+  ],
+});
diff --git a/src/data/composite/wiki-data/withConstitutedArtwork.js b/src/data/composite/wiki-data/withConstitutedArtwork.js
new file mode 100644
index 00000000..28d719e2
--- /dev/null
+++ b/src/data/composite/wiki-data/withConstitutedArtwork.js
@@ -0,0 +1,60 @@
+import {input, templateCompositeFrom} from '#composite';
+import thingConstructors from '#things';
+
+export default templateCompositeFrom({
+  annotation: `withConstitutedArtwork`,
+
+  inputs: {
+    thingProperty: input({type: 'string', acceptsNull: true}),
+    dimensionsFromThingProperty: input({type: 'string', acceptsNull: true}),
+    fileExtensionFromThingProperty: input({type: 'string', acceptsNull: true}),
+    dateFromThingProperty: input({type: 'string', acceptsNull: true}),
+    artistContribsFromThingProperty: input({type: 'string', acceptsNull: true}),
+    artistContribsArtistProperty: input({type: 'string', acceptsNull: true}),
+    artTagsFromThingProperty: input({type: 'string', acceptsNull: true}),
+    referencedArtworksFromThingProperty: input({type: 'string', acceptsNull: true}),
+  },
+
+  outputs: ['#constitutedArtwork'],
+
+  steps: () => [
+    {
+      dependencies: [
+        input.myself(),
+        input('thingProperty'),
+        input('dimensionsFromThingProperty'),
+        input('fileExtensionFromThingProperty'),
+        input('dateFromThingProperty'),
+        input('artistContribsFromThingProperty'),
+        input('artistContribsArtistProperty'),
+        input('artTagsFromThingProperty'),
+        input('referencedArtworksFromThingProperty'),
+      ],
+
+      compute: (continuation, {
+        [input.myself()]: myself,
+        [input('thingProperty')]: thingProperty,
+        [input('dimensionsFromThingProperty')]: dimensionsFromThingProperty,
+        [input('fileExtensionFromThingProperty')]: fileExtensionFromThingProperty,
+        [input('dateFromThingProperty')]: dateFromThingProperty,
+        [input('artistContribsFromThingProperty')]: artistContribsFromThingProperty,
+        [input('artistContribsArtistProperty')]: artistContribsArtistProperty,
+        [input('artTagsFromThingProperty')]: artTagsFromThingProperty,
+        [input('referencedArtworksFromThingProperty')]: referencedArtworksFromThingProperty,
+      }) => continuation({
+        ['#constitutedArtwork']:
+          Object.assign(new thingConstructors.Artwork, {
+            thing: myself,
+            thingProperty,
+            dimensionsFromThingProperty,
+            fileExtensionFromThingProperty,
+            artistContribsFromThingProperty,
+            artistContribsArtistProperty,
+            artTagsFromThingProperty,
+            dateFromThingProperty,
+            referencedArtworksFromThingProperty,
+          }),
+      }),
+    },
+  ],
+});
diff --git a/src/data/composite/wiki-data/withContentNodes.js b/src/data/composite/wiki-data/withContentNodes.js
new file mode 100644
index 00000000..d014d43b
--- /dev/null
+++ b/src/data/composite/wiki-data/withContentNodes.js
@@ -0,0 +1,25 @@
+import {input, templateCompositeFrom} from '#composite';
+import {parseContentNodes} from '#replacer';
+
+export default templateCompositeFrom({
+  annotation: `withContentNodes`,
+
+  inputs: {
+    from: input({type: 'string', acceptsNull: false}),
+  },
+
+  outputs: ['#contentNodes'],
+
+  steps: () => [
+    {
+      dependencies: [input('from')],
+
+      compute: (continuation, {
+        [input('from')]: string,
+      }) => continuation({
+        ['#contentNodes']:
+          parseContentNodes(string),
+      }),
+    },
+  ],
+});
diff --git a/src/data/composite/wiki-data/withCoverArtDate.js b/src/data/composite/wiki-data/withCoverArtDate.js
index 0c644c77..a114d5ff 100644
--- a/src/data/composite/wiki-data/withCoverArtDate.js
+++ b/src/data/composite/wiki-data/withCoverArtDate.js
@@ -1,7 +1,3 @@
-// Gets the current thing's coverArtDate, or, if the 'fallback' option is set,
-// the thing's date. This is always null if the thing doesn't actually have
-// any coverArtistContribs.
-
 import {input, templateCompositeFrom} from '#composite';
 import {isDate} from '#validators';
 
@@ -18,11 +14,6 @@ export default templateCompositeFrom({
       defaultDependency: 'coverArtDate',
       acceptsNull: true,
     }),
-
-    fallback: input({
-      type: 'boolean',
-      defaultValue: false,
-    }),
   },
 
   outputs: ['#coverArtDate'],
@@ -50,21 +41,11 @@ export default templateCompositeFrom({
     },
 
     {
-      dependencies: [input('fallback')],
-      compute: (continuation, {
-        [input('fallback')]: fallback,
-      }) =>
-        (fallback
-          ? continuation()
-          : continuation.raiseOutput({'#coverArtDate': null})),
-    },
-
-    {
       dependencies: ['date'],
       compute: (continuation, {date}) =>
         (date
-          ? continuation.raiseOutput({'#coverArtDate': date})
-          : continuation.raiseOutput({'#coverArtDate': null})),
+          ? continuation({'#coverArtDate': date})
+          : continuation({'#coverArtDate': null})),
     },
   ],
 });
diff --git a/src/data/composite/wiki-data/withParsedCommentaryEntries.js b/src/data/composite/wiki-data/withParsedCommentaryEntries.js
deleted file mode 100644
index 144781a8..00000000
--- a/src/data/composite/wiki-data/withParsedCommentaryEntries.js
+++ /dev/null
@@ -1,261 +0,0 @@
-import {input, templateCompositeFrom} from '#composite';
-import find from '#find';
-import {stitchArrays} from '#sugar';
-import {isCommentary} from '#validators';
-import {commentaryRegexCaseSensitive} from '#wiki-data';
-
-import {
-  fillMissingListItems,
-  withFlattenedList,
-  withPropertiesFromList,
-  withUnflattenedList,
-} from '#composite/data';
-
-import withResolvedReferenceList from './withResolvedReferenceList.js';
-
-export default templateCompositeFrom({
-  annotation: `withParsedCommentaryEntries`,
-
-  inputs: {
-    from: input({validate: isCommentary}),
-  },
-
-  outputs: ['#parsedCommentaryEntries'],
-
-  steps: () => [
-    {
-      dependencies: [input('from')],
-
-      compute: (continuation, {
-        [input('from')]: commentaryText,
-      }) => continuation({
-        ['#rawMatches']:
-          Array.from(commentaryText.matchAll(commentaryRegexCaseSensitive)),
-      }),
-    },
-
-    withPropertiesFromList({
-      list: '#rawMatches',
-      properties: input.value([
-        '0', // The entire match as a string.
-        'groups',
-        'index',
-      ]),
-    }).outputs({
-      '#rawMatches.0': '#rawMatches.text',
-      '#rawMatches.groups': '#rawMatches.groups',
-      '#rawMatches.index': '#rawMatches.startIndex',
-    }),
-
-    {
-      dependencies: [
-        '#rawMatches.text',
-        '#rawMatches.startIndex',
-      ],
-
-      compute: (continuation, {
-        ['#rawMatches.text']: text,
-        ['#rawMatches.startIndex']: startIndex,
-      }) => continuation({
-        ['#rawMatches.endIndex']:
-          stitchArrays({text, startIndex})
-            .map(({text, startIndex}) => startIndex + text.length),
-      }),
-    },
-
-    {
-      dependencies: [
-        input('from'),
-        '#rawMatches.startIndex',
-        '#rawMatches.endIndex',
-      ],
-
-      compute: (continuation, {
-        [input('from')]: commentaryText,
-        ['#rawMatches.startIndex']: startIndex,
-        ['#rawMatches.endIndex']: endIndex,
-      }) => continuation({
-        ['#entries.body']:
-          stitchArrays({startIndex, endIndex})
-            .map(({endIndex}, index, stitched) =>
-              (index === stitched.length - 1
-                ? commentaryText.slice(endIndex)
-                : commentaryText.slice(
-                    endIndex,
-                    stitched[index + 1].startIndex)))
-            .map(body => body.trim()),
-      }),
-    },
-
-    withPropertiesFromList({
-      list: '#rawMatches.groups',
-      prefix: input.value('#entries'),
-      properties: input.value([
-        'artistReferences',
-        'artistDisplayText',
-        'annotation',
-        'date',
-        'secondDate',
-        'dateKind',
-        'accessDate',
-        'accessKind',
-      ]),
-    }),
-
-    // The artistReferences group will always have a value, since it's required
-    // for the line to match in the first place.
-
-    {
-      dependencies: ['#entries.artistReferences'],
-      compute: (continuation, {
-        ['#entries.artistReferences']: artistReferenceTexts,
-      }) => continuation({
-        ['#entries.artistReferences']:
-          artistReferenceTexts
-            .map(text => text.split(',').map(ref => ref.trim())),
-      }),
-    },
-
-    withFlattenedList({
-      list: '#entries.artistReferences',
-    }),
-
-    withResolvedReferenceList({
-      list: '#flattenedList',
-      data: 'artistData',
-      find: input.value(find.artist),
-      notFoundMode: input.value('null'),
-    }),
-
-    withUnflattenedList({
-      list: '#resolvedReferenceList',
-    }).outputs({
-      '#unflattenedList': '#entries.artists',
-    }),
-
-    fillMissingListItems({
-      list: '#entries.artistDisplayText',
-      fill: input.value(null),
-    }),
-
-    fillMissingListItems({
-      list: '#entries.annotation',
-      fill: input.value(null),
-    }),
-
-    {
-      dependencies: ['#entries.annotation'],
-      compute: (continuation, {
-        ['#entries.annotation']: annotation,
-      }) => continuation({
-        ['#entries.webArchiveDate']:
-          annotation
-            .map(text => text?.match(/https?:\/\/web.archive.org\/web\/([0-9]{8,8})[0-9]*\//))
-            .map(match => match?.[1])
-            .map(dateText =>
-              (dateText
-                ? dateText.slice(0, 4) + '/' +
-                  dateText.slice(4, 6) + '/' +
-                  dateText.slice(6, 8)
-                : null)),
-      }),
-    },
-
-    {
-      dependencies: ['#entries.date'],
-      compute: (continuation, {
-        ['#entries.date']: date,
-      }) => continuation({
-        ['#entries.date']:
-          date
-            .map(date => date ? new Date(date) : null),
-      }),
-    },
-
-    {
-      dependencies: ['#entries.secondDate'],
-      compute: (continuation, {
-        ['#entries.secondDate']: secondDate,
-      }) => continuation({
-        ['#entries.secondDate']:
-          secondDate
-            .map(date => date ? new Date(date) : null),
-      }),
-    },
-
-    fillMissingListItems({
-      list: '#entries.dateKind',
-      fill: input.value(null),
-    }),
-
-    {
-      dependencies: ['#entries.accessDate', '#entries.webArchiveDate'],
-      compute: (continuation, {
-        ['#entries.accessDate']: accessDate,
-        ['#entries.webArchiveDate']: webArchiveDate,
-      }) => continuation({
-        ['#entries.accessDate']:
-          stitchArrays({accessDate, webArchiveDate})
-            .map(({accessDate, webArchiveDate}) =>
-              accessDate ??
-              webArchiveDate ??
-              null)
-            .map(date => date ? new Date(date) : date),
-      }),
-    },
-
-    {
-      dependencies: ['#entries.accessKind', '#entries.webArchiveDate'],
-      compute: (continuation, {
-        ['#entries.accessKind']: accessKind,
-        ['#entries.webArchiveDate']: webArchiveDate,
-      }) => continuation({
-        ['#entries.accessKind']:
-          stitchArrays({accessKind, webArchiveDate})
-            .map(({accessKind, webArchiveDate}) =>
-              accessKind ??
-              (webArchiveDate && 'captured') ??
-              null),
-      }),
-    },
-
-    {
-      dependencies: [
-        '#entries.artists',
-        '#entries.artistDisplayText',
-        '#entries.annotation',
-        '#entries.date',
-        '#entries.secondDate',
-        '#entries.dateKind',
-        '#entries.accessDate',
-        '#entries.accessKind',
-        '#entries.body',
-      ],
-
-      compute: (continuation, {
-        ['#entries.artists']: artists,
-        ['#entries.artistDisplayText']: artistDisplayText,
-        ['#entries.annotation']: annotation,
-        ['#entries.date']: date,
-        ['#entries.secondDate']: secondDate,
-        ['#entries.dateKind']: dateKind,
-        ['#entries.accessDate']: accessDate,
-        ['#entries.accessKind']: accessKind,
-        ['#entries.body']: body,
-      }) => continuation({
-        ['#parsedCommentaryEntries']:
-          stitchArrays({
-            artists,
-            artistDisplayText,
-            annotation,
-            date,
-            secondDate,
-            dateKind,
-            accessDate,
-            accessKind,
-            body,
-          }),
-      }),
-    },
-  ],
-});
diff --git a/src/data/composite/wiki-data/withRecontextualizedContributionList.js b/src/data/composite/wiki-data/withRecontextualizedContributionList.js
index d2401eac..bcc6e486 100644
--- a/src/data/composite/wiki-data/withRecontextualizedContributionList.js
+++ b/src/data/composite/wiki-data/withRecontextualizedContributionList.js
@@ -10,7 +10,6 @@
 import {input, templateCompositeFrom} from '#composite';
 import {isStringNonEmpty} from '#validators';
 
-import {raiseOutputWithoutDependency} from '#composite/control-flow';
 import {withClonedThings} from '#composite/wiki-data';
 
 export default templateCompositeFrom({
diff --git a/src/data/composite/wiki-data/withResolvedAnnotatedReferenceList.js b/src/data/composite/wiki-data/withResolvedAnnotatedReferenceList.js
index 789a8844..9cc52f29 100644
--- a/src/data/composite/wiki-data/withResolvedAnnotatedReferenceList.js
+++ b/src/data/composite/wiki-data/withResolvedAnnotatedReferenceList.js
@@ -1,15 +1,13 @@
 import {input, templateCompositeFrom} from '#composite';
 import {stitchArrays} from '#sugar';
-import {isDate, isObject, validateArrayItems} from '#validators';
+import {isObject, validateArrayItems} from '#validators';
 
 import {withPropertyFromList} from '#composite/data';
 
-import {
-  exitWithoutDependency,
-  raiseOutputWithoutDependency,
-  withAvailabilityFilter,
-} from '#composite/control-flow';
+import {raiseOutputWithoutDependency, withAvailabilityFilter}
+  from '#composite/control-flow';
 
+import inputSoupyFind from './inputSoupyFind.js';
 import inputNotFoundMode from './inputNotFoundMode.js';
 import inputWikiData from './inputWikiData.js';
 import raiseResolvedReferenceList from './raiseResolvedReferenceList.js';
@@ -24,17 +22,12 @@ export default templateCompositeFrom({
       acceptsNull: true,
     }),
 
-    date: input({
-      validate: isDate,
-      acceptsNull: true,
-    }),
-
     reference: input({type: 'string', defaultValue: 'reference'}),
     annotation: input({type: 'string', defaultValue: 'annotation'}),
     thing: input({type: 'string', defaultValue: 'thing'}),
 
     data: inputWikiData({allowMixedTypes: true}),
-    find: input({type: 'function'}),
+    find: inputSoupyFind(),
 
     notFoundMode: inputNotFoundMode(),
   },
@@ -42,11 +35,6 @@ export default templateCompositeFrom({
   outputs: ['#resolvedAnnotatedReferenceList'],
 
   steps: () => [
-    exitWithoutDependency({
-      dependency: input('data'),
-      value: input.value([]),
-    }),
-
     raiseOutputWithoutDependency({
       dependency: input('list'),
       mode: input.value('empty'),
@@ -98,17 +86,6 @@ export default templateCompositeFrom({
       }),
     },
 
-    {
-      dependencies: ['#matches', input('date')],
-      compute: (continuation, {
-        ['#matches']: matches,
-        [input('date')]: date,
-      }) => continuation({
-        ['#matches']:
-          matches.map(match => ({...match, date})),
-      }),
-    },
-
     withAvailabilityFilter({
       from: '#resolvedReferenceList',
     }),
diff --git a/src/data/composite/wiki-data/withResolvedContribs.js b/src/data/composite/wiki-data/withResolvedContribs.js
index fd3d8a0d..838c991f 100644
--- a/src/data/composite/wiki-data/withResolvedContribs.js
+++ b/src/data/composite/wiki-data/withResolvedContribs.js
@@ -110,6 +110,7 @@ export default templateCompositeFrom({
         '#thingProperty',
         input('artistProperty'),
         input.myself(),
+        'find',
       ],
 
       compute: (continuation, {
@@ -117,6 +118,7 @@ export default templateCompositeFrom({
         ['#thingProperty']: thingProperty,
         [input('artistProperty')]: artistProperty,
         [input.myself()]: myself,
+        ['find']: find,
       }) => continuation({
         ['#contributions']:
           details.map(details => {
@@ -127,6 +129,7 @@ export default templateCompositeFrom({
               thing: myself,
               thingProperty: thingProperty,
               artistProperty: artistProperty,
+              find: find,
             });
 
             return contrib;
diff --git a/src/data/composite/wiki-data/withResolvedReference.js b/src/data/composite/wiki-data/withResolvedReference.js
index ea71707e..6f422194 100644
--- a/src/data/composite/wiki-data/withResolvedReference.js
+++ b/src/data/composite/wiki-data/withResolvedReference.js
@@ -1,16 +1,14 @@
 // Resolves a reference by using the provided find function to match it
-// within the provided thingData dependency. This will early exit if the
-// data dependency is null. Otherwise, the data object is provided on the
-// output dependency, or null, if the reference doesn't match anything or
+// within the provided thingData dependency. The data object is provided on
+// the output dependency, or null, if the reference doesn't match anything or
 // itself was null to begin with.
 
 import {input, templateCompositeFrom} from '#composite';
 
-import {
-  exitWithoutDependency,
-  raiseOutputWithoutDependency,
-} from '#composite/control-flow';
+import {raiseOutputWithoutDependency} from '#composite/control-flow';
 
+import gobbleSoupyFind from './gobbleSoupyFind.js';
+import inputSoupyFind from './inputSoupyFind.js';
 import inputWikiData from './inputWikiData.js';
 
 export default templateCompositeFrom({
@@ -20,7 +18,7 @@ export default templateCompositeFrom({
     ref: input({type: 'string', acceptsNull: true}),
 
     data: inputWikiData({allowMixedTypes: false}),
-    find: input({type: 'function'}),
+    find: inputSoupyFind(),
   },
 
   outputs: ['#resolvedReference'],
@@ -33,24 +31,26 @@ export default templateCompositeFrom({
       }),
     }),
 
-    exitWithoutDependency({
-      dependency: input('data'),
+    gobbleSoupyFind({
+      find: input('find'),
     }),
 
     {
       dependencies: [
         input('ref'),
         input('data'),
-        input('find'),
+        '#find',
       ],
 
       compute: (continuation, {
         [input('ref')]: ref,
         [input('data')]: data,
-        [input('find')]: findFunction,
+        ['#find']: findFunction,
       }) => continuation({
         ['#resolvedReference']:
-          findFunction(ref, data, {mode: 'quiet'}) ?? null,
+          (data
+            ? findFunction(ref, data, {mode: 'quiet'}) ?? null
+            : findFunction(ref, {mode: 'quiet'}) ?? null),
       }),
     },
   ],
diff --git a/src/data/composite/wiki-data/withResolvedReferenceList.js b/src/data/composite/wiki-data/withResolvedReferenceList.js
index 790a962f..9dc960dd 100644
--- a/src/data/composite/wiki-data/withResolvedReferenceList.js
+++ b/src/data/composite/wiki-data/withResolvedReferenceList.js
@@ -1,19 +1,18 @@
 // Resolves a list of references, with each reference matched with provided
-// data in the same way as withResolvedReference. This will early exit if the
-// data dependency is null (even if the reference list is empty). By default
-// it will filter out references which don't match, but this can be changed
-// to early exit ({notFoundMode: 'exit'}) or leave null in place ('null').
+// data in the same way as withResolvedReference. By default it will filter
+// out references which don't match, but this can be changed to early exit
+// ({notFoundMode: 'exit'}) or leave null in place ('null').
 
 import {input, templateCompositeFrom} from '#composite';
 import {isString, validateArrayItems} from '#validators';
 
-import {
-  exitWithoutDependency,
-  raiseOutputWithoutDependency,
-  withAvailabilityFilter,
-} from '#composite/control-flow';
+import {raiseOutputWithoutDependency, withAvailabilityFilter}
+  from '#composite/control-flow';
+import {withMappedList} from '#composite/data';
 
+import gobbleSoupyFind from './gobbleSoupyFind.js';
 import inputNotFoundMode from './inputNotFoundMode.js';
+import inputSoupyFind from './inputSoupyFind.js';
 import inputWikiData from './inputWikiData.js';
 import raiseResolvedReferenceList from './raiseResolvedReferenceList.js';
 
@@ -27,7 +26,7 @@ export default templateCompositeFrom({
     }),
 
     data: inputWikiData({allowMixedTypes: true}),
-    find: input({type: 'function'}),
+    find: inputSoupyFind(),
 
     notFoundMode: inputNotFoundMode(),
   },
@@ -35,11 +34,6 @@ export default templateCompositeFrom({
   outputs: ['#resolvedReferenceList'],
 
   steps: () => [
-    exitWithoutDependency({
-      dependency: input('data'),
-      value: input.value([]),
-    }),
-
     raiseOutputWithoutDependency({
       dependency: input('list'),
       mode: input.value('empty'),
@@ -48,18 +42,30 @@ export default templateCompositeFrom({
       }),
     }),
 
+    gobbleSoupyFind({
+      find: input('find'),
+    }),
+
     {
-      dependencies: [input('list'), input('data'), input('find')],
+      dependencies: [input('data'), '#find'],
       compute: (continuation, {
-        [input('list')]: list,
         [input('data')]: data,
-        [input('find')]: findFunction,
-      }) =>
-        continuation({
-          '#matches': list.map(ref => findFunction(ref, data, {mode: 'quiet'})),
-        }),
+        ['#find']: findFunction,
+      }) => continuation({
+        ['#map']:
+          (data
+            ? ref => findFunction(ref, data, {mode: 'quiet'})
+            : ref => findFunction(ref, {mode: 'quiet'})),
+      }),
     },
 
+    withMappedList({
+      list: input('list'),
+      map: '#map',
+    }).outputs({
+      '#mappedList': '#matches',
+    }),
+
     withAvailabilityFilter({
       from: '#matches',
     }),
diff --git a/src/data/composite/wiki-data/withResolvedSeriesList.js b/src/data/composite/wiki-data/withResolvedSeriesList.js
deleted file mode 100644
index 4ac74cc3..00000000
--- a/src/data/composite/wiki-data/withResolvedSeriesList.js
+++ /dev/null
@@ -1,131 +0,0 @@
-import {input, templateCompositeFrom} from '#composite';
-import find from '#find';
-import {stitchArrays} from '#sugar';
-import {isSeriesList, validateThing} from '#validators';
-
-import {raiseOutputWithoutDependency} from '#composite/control-flow';
-
-import {
-  fillMissingListItems,
-  withFlattenedList,
-  withUnflattenedList,
-  withPropertiesFromList,
-} from '#composite/data';
-
-import withResolvedReferenceList from './withResolvedReferenceList.js';
-
-export default templateCompositeFrom({
-  annotation: `withResolvedSeriesList`,
-
-  inputs: {
-    group: input({
-      validate: validateThing({referenceType: 'group'}),
-    }),
-
-    list: input({
-      validate: isSeriesList,
-      acceptsNull: true,
-    }),
-  },
-
-  outputs: ['#resolvedSeriesList'],
-
-  steps: () => [
-    raiseOutputWithoutDependency({
-      dependency: input('list'),
-      mode: input.value('empty'),
-      output: input.value({
-        ['#resolvedSeriesList']: [],
-      }),
-    }),
-
-    withPropertiesFromList({
-      list: input('list'),
-      prefix: input.value('#serieses'),
-      properties: input.value([
-        'name',
-        'description',
-        'albums',
-
-        'showAlbumArtists',
-      ]),
-    }),
-
-    fillMissingListItems({
-      list: '#serieses.albums',
-      fill: input.value([]),
-    }),
-
-    withFlattenedList({
-      list: '#serieses.albums',
-    }),
-
-    withResolvedReferenceList({
-      list: '#flattenedList',
-      data: 'albumData',
-      find: input.value(find.album),
-      notFoundMode: input.value('null'),
-    }),
-
-    withUnflattenedList({
-      list: '#resolvedReferenceList',
-    }).outputs({
-      '#unflattenedList': '#serieses.albums',
-    }),
-
-    fillMissingListItems({
-      list: '#serieses.description',
-      fill: input.value(null),
-    }),
-
-    fillMissingListItems({
-      list: '#serieses.showAlbumArtists',
-      fill: input.value(null),
-    }),
-
-    {
-      dependencies: [
-        '#serieses.name',
-        '#serieses.description',
-        '#serieses.albums',
-
-        '#serieses.showAlbumArtists',
-      ],
-
-      compute: (continuation, {
-        ['#serieses.name']: name,
-        ['#serieses.description']: description,
-        ['#serieses.albums']: albums,
-
-        ['#serieses.showAlbumArtists']: showAlbumArtists,
-      }) => continuation({
-        ['#seriesProperties']:
-          stitchArrays({
-            name,
-            description,
-            albums,
-
-            showAlbumArtists,
-          }).map(properties => ({
-              ...properties,
-              group: input
-            }))
-      }),
-    },
-
-    {
-      dependencies: ['#seriesProperties', input('group')],
-      compute: (continuation, {
-        ['#seriesProperties']: seriesProperties,
-        [input('group')]: group,
-      }) => continuation({
-        ['#resolvedSeriesList']:
-          seriesProperties
-            .map(properties => ({
-              ...properties,
-              group,
-            })),
-      }),
-    },
-  ],
-});
diff --git a/src/data/composite/wiki-data/withReverseAnnotatedReferenceList.js b/src/data/composite/wiki-data/withReverseAnnotatedReferenceList.js
deleted file mode 100644
index feae9ccb..00000000
--- a/src/data/composite/wiki-data/withReverseAnnotatedReferenceList.js
+++ /dev/null
@@ -1,116 +0,0 @@
-// Analogous implementation for withReverseReferenceList, for annotated
-// references.
-//
-// Unlike withReverseContributionList, this composition is responsible for
-// "flipping" the directionality of references: in a forward reference list,
-// `thing` points to the thing being referenced, while here, it points to the
-// referencing thing.
-//
-// This behavior can be customized to respect reference lists which are shaped
-// differently than the default and/or to customize the reversed property and
-// provide a less generic label than just "thing".
-
-import withReverseList_template from './helpers/withReverseList-template.js';
-
-import {input} from '#composite';
-import {stitchArrays} from '#sugar';
-
-import {
-  withFlattenedList,
-  withMappedList,
-  withPropertyFromList,
-  withStretchedList,
-} from '#composite/data';
-
-export default withReverseList_template({
-  annotation: `withReverseAnnotatedReferenceList`,
-
-  propertyInputName: 'list',
-  outputName: '#reverseAnnotatedReferenceList',
-
-  additionalInputs: {
-    forward: input({type: 'string', defaultValue: 'thing'}),
-    backward: input({type: 'string', defaultValue: 'thing'}),
-    annotation: input({type: 'string', defaultValue: 'annotation'}),
-  },
-
-  customCompositionSteps: () => [
-    withPropertyFromList({
-      list: input('data'),
-      property: input('list'),
-    }).outputs({
-      '#values': '#referenceLists',
-    }),
-
-    withPropertyFromList({
-      list: '#referenceLists',
-      property: input.value('length'),
-    }),
-
-    withFlattenedList({
-      list: '#referenceLists',
-    }).outputs({
-      '#flattenedList': '#references',
-    }),
-
-    withStretchedList({
-      list: input('data'),
-      lengths: '#referenceLists.length',
-    }).outputs({
-      '#stretchedList': '#things',
-    }),
-
-    withPropertyFromList({
-      list: '#references',
-      property: input('annotation'),
-    }).outputs({
-      '#values': '#annotations',
-    }),
-
-    withPropertyFromList({
-      list: '#references',
-      property: input.value('date'),
-    }).outputs({
-      '#references.date': '#dates',
-    }),
-
-    {
-      dependencies: [
-        input('backward'),
-        input('annotation'),
-        '#things',
-        '#annotations',
-        '#dates',
-      ],
-
-      compute: (continuation, {
-        [input('backward')]: thingProperty,
-        [input('annotation')]: annotationProperty,
-        ['#things']: things,
-        ['#annotations']: annotations,
-        ['#dates']: dates,
-      }) => continuation({
-        '#referencingThings':
-          stitchArrays({
-            [thingProperty]: things,
-            [annotationProperty]: annotations,
-            date: dates,
-          }),
-      }),
-    },
-
-    withPropertyFromList({
-      list: '#references',
-      property: input('forward'),
-    }).outputs({
-      '#values': '#individualReferencedThings',
-    }),
-
-    withMappedList({
-      list: '#individualReferencedThings',
-      map: input.value(thing => [thing]),
-    }).outputs({
-      '#mappedList': '#referencedThings',
-    }),
-  ],
-});
diff --git a/src/data/composite/wiki-data/withReverseContributionList.js b/src/data/composite/wiki-data/withReverseContributionList.js
deleted file mode 100644
index 2396c3b4..00000000
--- a/src/data/composite/wiki-data/withReverseContributionList.js
+++ /dev/null
@@ -1,37 +0,0 @@
-// Analogous implementation for withReverseReferenceList, for contributions.
-
-import withReverseList_template from './helpers/withReverseList-template.js';
-
-import {input} from '#composite';
-
-import {withFlattenedList, withMappedList, withPropertyFromList}
-  from '#composite/data';
-
-export default withReverseList_template({
-  annotation: `withReverseContributionList`,
-
-  propertyInputName: 'list',
-  outputName: '#reverseContributionList',
-
-  customCompositionSteps: () => [
-    withPropertyFromList({
-      list: input('data'),
-      property: input('list'),
-    }).outputs({
-      '#values': '#contributionLists',
-    }),
-
-    withFlattenedList({
-      list: '#contributionLists',
-    }).outputs({
-      '#flattenedList': '#referencingThings',
-    }),
-
-    withMappedList({
-      list: '#referencingThings',
-      map: input.value(contrib => [contrib.artist]),
-    }).outputs({
-      '#mappedList': '#referencedThings',
-    }),
-  ],
-});
diff --git a/src/data/composite/wiki-data/withReverseReferenceList.js b/src/data/composite/wiki-data/withReverseReferenceList.js
index 70d9a58d..906f5bc5 100644
--- a/src/data/composite/wiki-data/withReverseReferenceList.js
+++ b/src/data/composite/wiki-data/withReverseReferenceList.js
@@ -1,44 +1,36 @@
 // Check out the info on reverseReferenceList!
 // This is its composable form.
 
-import withReverseList_template from './helpers/withReverseList-template.js';
+import {input, templateCompositeFrom} from '#composite';
 
-import {input} from '#composite';
+import gobbleSoupyReverse from './gobbleSoupyReverse.js';
+import inputSoupyReverse from './inputSoupyReverse.js';
+import inputWikiData from './inputWikiData.js';
 
-import {withMappedList} from '#composite/data';
+import withResolvedReverse from './helpers/withResolvedReverse.js';
 
-export default withReverseList_template({
+export default templateCompositeFrom({
   annotation: `withReverseReferenceList`,
 
-  propertyInputName: 'list',
-  outputName: '#reverseReferenceList',
-
-  customCompositionSteps: () => [
-    {
-      dependencies: [input('list')],
-      compute: (continuation, {
-        [input('list')]: list,
-      }) => continuation({
-        ['#referenceMap']:
-          thing => thing[list],
-      }),
-    },
-
-    withMappedList({
-      list: input('data'),
-      map: '#referenceMap',
-    }).outputs({
-      '#mappedList': '#referencedThings',
+  inputs: {
+    data: inputWikiData({allowMixedTypes: true}),
+    reverse: inputSoupyReverse(),
+  },
+
+  outputs: ['#reverseReferenceList'],
+
+  steps: () => [
+    gobbleSoupyReverse({
+      reverse: input('reverse'),
     }),
 
-    {
-      dependencies: [input('data')],
-      compute: (continuation, {
-        [input('data')]: data,
-      }) => continuation({
-        ['#referencingThings']:
-          data,
-      }),
-    },
+    // TODO: Check that the reverse spec returns a list.
+
+    withResolvedReverse({
+      data: input('data'),
+      reverse: '#reverse',
+    }).outputs({
+      '#resolvedReverse': '#reverseReferenceList',
+    }),
   ],
 });
diff --git a/src/data/composite/wiki-data/withReverseSingleReferenceList.js b/src/data/composite/wiki-data/withReverseSingleReferenceList.js
deleted file mode 100644
index dd97dc66..00000000
--- a/src/data/composite/wiki-data/withReverseSingleReferenceList.js
+++ /dev/null
@@ -1,50 +0,0 @@
-// Like withReverseReferenceList, but for finding all things which reference
-// the current thing by a property that contains a single reference, rather
-// than within a reference list.
-
-import withReverseList_template from './helpers/withReverseList-template.js';
-
-import {input} from '#composite';
-
-import {withMappedList} from '#composite/data';
-
-export default withReverseList_template({
-  annotation: `withReverseSingleReferenceList`,
-
-  propertyInputName: 'ref',
-  outputName: '#reverseSingleReferenceList',
-
-  customCompositionSteps: () => [
-    {
-      dependencies: [input('data')],
-      compute: (continuation, {
-        [input('data')]: data,
-      }) => continuation({
-        ['#referencingThings']:
-          data,
-      }),
-    },
-
-    // This map wraps each referenced thing in a single-item array.
-    // Each referencing thing references exactly one thing, if any.
-    {
-      dependencies: [input('ref')],
-      compute: (continuation, {
-        [input('ref')]: ref,
-      }) => continuation({
-        ['#singleReferenceMap']:
-          thing =>
-            (thing[ref]
-              ? [thing[ref]]
-              : []),
-      }),
-    },
-
-    withMappedList({
-      list: '#referencingThings',
-      map: '#singleReferenceMap',
-    }).outputs({
-      '#mappedList': '#referencedThings',
-    }),
-  ],
-});
diff --git a/src/data/composite/wiki-data/withUniqueReferencingThing.js b/src/data/composite/wiki-data/withUniqueReferencingThing.js
index 61c10618..7c267038 100644
--- a/src/data/composite/wiki-data/withUniqueReferencingThing.js
+++ b/src/data/composite/wiki-data/withUniqueReferencingThing.js
@@ -4,48 +4,33 @@
 
 import {input, templateCompositeFrom} from '#composite';
 
-import {exitWithoutDependency, raiseOutputWithoutDependency}
-  from '#composite/control-flow';
-
+import gobbleSoupyReverse from './gobbleSoupyReverse.js';
+import inputSoupyReverse from './inputSoupyReverse.js';
 import inputWikiData from './inputWikiData.js';
-import withReverseReferenceList from './withReverseReferenceList.js';
+
+import withResolvedReverse from './helpers/withResolvedReverse.js';
 
 export default templateCompositeFrom({
   annotation: `withUniqueReferencingThing`,
 
   inputs: {
-    data: inputWikiData({allowMixedTypes: false}),
-    list: input({type: 'string'}),
+    data: inputWikiData({allowMixedTypes: true}),
+    reverse: inputSoupyReverse(),
   },
 
   outputs: ['#uniqueReferencingThing'],
 
   steps: () => [
-    // Early exit with null (not an empty array) if the data list
-    // isn't available.
-    exitWithoutDependency({
-      dependency: input('data'),
+    gobbleSoupyReverse({
+      reverse: input('reverse'),
     }),
 
-    withReverseReferenceList({
+    withResolvedReverse({
       data: input('data'),
-      list: input('list'),
+      reverse: '#reverse',
+      options: input.value({unique: true}),
+    }).outputs({
+      '#resolvedReverse': '#uniqueReferencingThing',
     }),
-
-    raiseOutputWithoutDependency({
-      dependency: '#reverseReferenceList',
-      mode: input.value('empty'),
-      output: input.value({'#uniqueReferencingThing': null}),
-    }),
-
-    {
-      dependencies: ['#reverseReferenceList'],
-      compute: (continuation, {
-        ['#reverseReferenceList']: reverseReferenceList,
-      }) => continuation({
-        ['#uniqueReferencingThing']:
-          reverseReferenceList[0],
-      }),
-    },
   ],
 });