second commit

node_modules/yaml/browser/dist/schema/yaml-1.1/merge.js

@@ -0,0 +1,64 @@
+import { isScalar, isAlias, isSeq, isMap } from '../../nodes/identity.js';
+import { Scalar } from '../../nodes/Scalar.js';
+
+// If the value associated with a merge key is a single mapping node, each of
+// its key/value pairs is inserted into the current mapping, unless the key
+// already exists in it. If the value associated with the merge key is a
+// sequence, then this sequence is expected to contain mapping nodes and each
+// of these nodes is merged in turn according to its order in the sequence.
+// Keys in mapping nodes earlier in the sequence override keys specified in
+// later mapping nodes. -- http://yaml.org/type/merge.html
+const MERGE_KEY = '<<';
+const merge = {
+    identify: value => value === MERGE_KEY ||
+        (typeof value === 'symbol' && value.description === MERGE_KEY),
+    default: 'key',
+    tag: 'tag:yaml.org,2002:merge',
+    test: /^<<$/,
+    resolve: () => Object.assign(new Scalar(Symbol(MERGE_KEY)), {
+        addToJSMap: addMergeToJSMap
+    }),
+    stringify: () => MERGE_KEY
+};
+const isMergeKey = (ctx, key) => (merge.identify(key) ||
+    (isScalar(key) &&
+        (!key.type || key.type === Scalar.PLAIN) &&
+        merge.identify(key.value))) &&
+    ctx?.doc.schema.tags.some(tag => tag.tag === merge.tag && tag.default);
+function addMergeToJSMap(ctx, map, value) {
+    value = ctx && isAlias(value) ? value.resolve(ctx.doc) : value;
+    if (isSeq(value))
+        for (const it of value.items)
+            mergeValue(ctx, map, it);
+    else if (Array.isArray(value))
+        for (const it of value)
+            mergeValue(ctx, map, it);
+    else
+        mergeValue(ctx, map, value);
+}
+function mergeValue(ctx, map, value) {
+    const source = ctx && isAlias(value) ? value.resolve(ctx.doc) : value;
+    if (!isMap(source))
+        throw new Error('Merge sources must be maps or map aliases');
+    const srcMap = source.toJSON(null, ctx, Map);
+    for (const [key, value] of srcMap) {
+        if (map instanceof Map) {
+            if (!map.has(key))
+                map.set(key, value);
+        }
+        else if (map instanceof Set) {
+            map.add(key);
+        }
+        else if (!Object.prototype.hasOwnProperty.call(map, key)) {
+            Object.defineProperty(map, key, {
+                value,
+                writable: true,
+                enumerable: true,
+                configurable: true
+            });
+        }
+    }
+    return map;
+}
+
+export { addMergeToJSMap, isMergeKey, merge };