Added missing changes and modified dist assets.

dist/index.js

@@ -68647,7 +68647,7 @@ const jsonScalars = [
         identify: value => typeof value === 'boolean',
         default: true,
         tag: 'tag:yaml.org,2002:bool',
-        test: /^true|false$/,
+        test: /^true$|^false$/,
         resolve: str => str === 'true',
         stringify: stringifyJSON
     },
@@ -69553,7 +69553,7 @@ const timestamp = {
         }
         return new Date(date);
     },
-    stringify: ({ value }) => value.toISOString().replace(/((T00:00)?:00)?\.000Z$/, '')
+    stringify: ({ value }) => value.toISOString().replace(/(T00:00:00)?\.000Z$/, '')
 };
 
 exports.floatTime = floatTime;
@@ -70563,23 +70563,32 @@ function blockString({ comment, type, value }, ctx, onComment, onChompKeep) {
         start = start.replace(/\n+/g, `$&${indent}`);
     }
     const indentSize = indent ? '2' : '1'; // root is at -1
-    let header = (literal ? '|' : '>') + (startWithSpace ? indentSize : '') + chomp;
+    // Leading | or > is added later
+    let header = (startWithSpace ? indentSize : '') + chomp;
     if (comment) {
         header += ' ' + commentString(comment.replace(/ ?[\r\n]+/g, ' '));
         if (onComment)
             onComment();
     }
-    if (literal) {
-        value = value.replace(/\n+/g, `$&${indent}`);
-        return `${header}\n${indent}${start}${value}${end}`;
+    if (!literal) {
+        const foldedValue = value
+            .replace(/\n+/g, '\n$&')
+            .replace(/(?:^|\n)([\t ].*)(?:([\n\t ]*)\n(?![\n\t ]))?/g, '$1$2') // more-indented lines aren't folded
+            //                ^ more-ind. ^ empty     ^ capture next empty lines only at end of indent
+            .replace(/\n+/g, `$&${indent}`);
+        let literalFallback = false;
+        const foldOptions = getFoldOptions(ctx, true);
+        if (blockQuote !== 'folded' && type !== Scalar.Scalar.BLOCK_FOLDED) {
+            foldOptions.onOverflow = () => {
+                literalFallback = true;
+            };
+        }
+        const body = foldFlowLines.foldFlowLines(`${start}${foldedValue}${end}`, indent, foldFlowLines.FOLD_BLOCK, foldOptions);
+        if (!literalFallback)
+            return `>${header}\n${indent}${body}`;
     }
-    value = value
-        .replace(/\n+/g, '\n$&')
-        .replace(/(?:^|\n)([\t ].*)(?:([\n\t ]*)\n(?![\n\t ]))?/g, '$1$2') // more-indented lines aren't folded
-        //                ^ more-ind. ^ empty     ^ capture next empty lines only at end of indent
-        .replace(/\n+/g, `$&${indent}`);
-    const body = foldFlowLines.foldFlowLines(`${start}${value}${end}`, indent, foldFlowLines.FOLD_BLOCK, getFoldOptions(ctx, true));
-    return `${header}\n${indent}${body}`;
+    value = value.replace(/\n+/g, `$&${indent}`);
+    return `|${header}\n${indent}${start}${value}${end}`;
 }
 function plainString(item, ctx, onComment, onChompKeep) {
     const { type, value } = item;

yarn.lock

@@ -4274,9 +4274,9 @@ yallist@^3.0.2:
   integrity sha512-a4UGQaWPH59mOXUYnAG2ewncQS4i4F43Tv3JoAM+s2VDAmS9NsK8GpDMLrCHPksFT7h3K6TOoUNn2pb7RoXx4g==
 
 yaml@^2.3.1:
-  version "2.6.0"
-  resolved "https://registry.yarnpkg.com/yaml/-/yaml-2.6.0.tgz#14059ad9d0b1680d0f04d3a60fe00f3a857303c3"
-  integrity sha512-a6ae//JvKDEra2kdi1qzCyrJW/WZCgFi8ydDV+eXExl95t+5R+ijnqHJbz9tmMh8FUjx3iv2fCQ4dclAQlO2UQ==
+  version "2.6.1"
+  resolved "https://registry.yarnpkg.com/yaml/-/yaml-2.6.1.tgz#42f2b1ba89203f374609572d5349fb8686500773"
+  integrity sha512-7r0XPzioN/Q9kXBro/XPnA6kznR73DHq+GXh5ON7ZozRO6aMjbmiBuKste2wslTFkC5d1dw0GooOCepZXJ2SAg==
 
 yargs-parser@^21.1.1:
   version "21.1.1"