diff --git a/src/packages/core-parts/index.ts b/src/packages/core-parts/index.ts
index 09a979a..05f6131 100644
--- a/src/packages/core-parts/index.ts
+++ b/src/packages/core-parts/index.ts
@@ -38,54 +38,36 @@ function parseLineByLine(
         rangeStartOfLine <= rangeStartOfBrace && rangeEndOfBrace <= rangeEndOfLine,
     );
     const parts: LinePart[] = [];
-    let maybeLastPart: LinePart | null = null;
 
     const offset = indentUnit.length * indentLevel;
-    const trimmedLine = line.slice(offset); // base of 'mutableLine'
-    let mutableLine = trimmedLine;
 
-    if (braceNodesInCurrentLine.length === 0) {
+    let temporaryRangeEnd = rangeEndOfLine;
+
+    for (let index = braceNodesInCurrentLine.length - 1; index >= 0; index -= 1) {
+      const braceNode = braceNodesInCurrentLine[index];
+      const [rangeStartOfBrace, rangeEndOfBrace] = braceNode.range;
+
       parts.push({
         type: 'Text',
-        body: mutableLine,
+        body: formattedText.slice(rangeEndOfBrace, temporaryRangeEnd),
       });
-    } else {
-      const lastBraceNodeInCurrentLine = braceNodesInCurrentLine.pop()!;
-
-      if (
-        lastBraceNodeInCurrentLine.type === BraceType.OB ||
-        lastBraceNodeInCurrentLine.type === BraceType.OBTO
-      ) {
-        maybeLastPart = {
-          type: lastBraceNodeInCurrentLine.type,
-          body: formattedText.slice(lastBraceNodeInCurrentLine.range[0], rangeEndOfLine),
-        };
-        mutableLine = formattedText.slice(
-          rangeStartOfLine + offset,
-          lastBraceNodeInCurrentLine.range[0],
-        );
-      } else {
-        braceNodesInCurrentLine.push(lastBraceNodeInCurrentLine);
-      }
-
-      if (braceNodesInCurrentLine.length) {
-        parts.push({
-          type: BraceType.CB,
-          body: '}',
-        });
-        mutableLine = mutableLine.slice(1);
-      }
-
-      if (mutableLine) {
-        parts.push({
-          type: 'Text',
-          body: mutableLine,
-        });
-      }
-
-      if (maybeLastPart) {
-        parts.push(maybeLastPart);
-      }
+      parts.push({
+        type: braceNode.type,
+        body: formattedText.slice(rangeStartOfBrace, rangeEndOfBrace),
+      });
+      temporaryRangeEnd = rangeStartOfBrace;
+    }
+    parts.push({
+      type: 'Text',
+      body: formattedText.slice(rangeStartOfLine, temporaryRangeEnd).slice(offset),
+    });
+    parts.reverse();
+
+    if (parts.length > 1 && parts[0].body === '') {
+      parts.shift();
+    }
+    if (parts.length > 1 && parts[parts.length - 1].body === '') {
+      parts.pop();
     }
 
     rangeStartOfLine = rangeEndOfLine + EOL.length;
@@ -98,63 +80,83 @@ function parseLineByLine(
 }
 
 /**
- * If `Text` exists after `ClosingBrace`, add a line break between `ClosingBrace` and `Text`.
+ * Add a line break after `ClosingBrace`.
  */
-function splitLineStartingWithClosingBrace(lineNodes: LineNode[]) {
-  for (let index = lineNodes.length - 1; index >= 0; index -= 1) {
-    const { indentLevel, parts } = lineNodes[index];
-    const firstPart = parts.at(0);
-
-    if (firstPart?.type === BraceType.CB) {
-      const secondPart = parts.at(1);
-
-      if (secondPart) {
-        lineNodes.splice(
-          index,
-          1,
-          { indentLevel, parts: [firstPart] },
-          {
-            indentLevel,
-            parts: [
-              { type: secondPart.type, body: secondPart.body.trimStart() },
-              ...parts.slice(2),
-            ],
-          },
-        );
+function splitLineContainingClosingBrace(lineNodes: LineNode[]) {
+  for (let lineIndex = lineNodes.length - 1; lineIndex >= 0; lineIndex -= 1) {
+    const { indentLevel, parts } = lineNodes[lineIndex];
+    const temporaryLineNodes: LineNode[] = [];
+
+    let temporaryPartIndex = 0;
+
+    for (let partIndex = 0; partIndex < parts.length; partIndex += 1) {
+      const currentPart = parts[partIndex];
+
+      if (currentPart.type === BraceType.CB) {
+        temporaryLineNodes.push({
+          indentLevel,
+          parts: parts.slice(temporaryPartIndex, partIndex + 1),
+        });
+        temporaryPartIndex = partIndex + 1;
+
+        const rightPart = parts.at(partIndex + 1);
+
+        if (rightPart) {
+          rightPart.body = rightPart.body.trimStart();
+        }
       }
     }
+    temporaryLineNodes.push({
+      indentLevel,
+      parts: parts.slice(temporaryPartIndex),
+    });
+
+    lineNodes.splice(
+      lineIndex,
+      1,
+      ...temporaryLineNodes.filter((lineNode) => lineNode.parts.length),
+    );
   }
 }
 
 /**
- * If `Text` exists before `OpeningBrace`, add a line break between `OpeningBrace` and `Text`.
+ * Add a line break before `OpeningBrace`.
  */
-function splitLineEndingWithOpeningBrace(lineNodes: LineNode[]) {
-  for (let index = lineNodes.length - 1; index >= 0; index -= 1) {
-    const { indentLevel, parts } = lineNodes[index];
-    const lastPart = parts.at(-1);
-
-    if (lastPart?.type === BraceType.OB || lastPart?.type === BraceType.OBTO) {
-      const secondLastPart = parts.at(-2);
-
-      if (secondLastPart) {
-        lineNodes.splice(
-          index,
-          1,
-          {
-            indentLevel,
-            parts: [
-              ...parts.slice(0, -2),
-              { type: secondLastPart.type, body: secondLastPart.body.trimEnd() },
-            ],
-          },
-          {
-            indentLevel: lastPart?.type === BraceType.OBTO ? indentLevel + 1 : indentLevel,
-            parts: [lastPart],
-          },
-        );
+function splitLineContainingOpeningBrace(lineNodes: LineNode[]) {
+  for (let lineIndex = lineNodes.length - 1; lineIndex >= 0; lineIndex -= 1) {
+    const { indentLevel, parts } = lineNodes[lineIndex];
+    const temporaryLineNodes: LineNode[] = [];
+
+    let temporaryPartIndex = parts.length;
+
+    for (let partIndex = parts.length - 1; partIndex >= 0; partIndex -= 1) {
+      const currentPart = parts[partIndex];
+
+      if (currentPart.type === BraceType.OB || currentPart.type === BraceType.OBTO) {
+        temporaryLineNodes.push({
+          indentLevel: currentPart.type === BraceType.OBTO ? indentLevel + 1 : indentLevel,
+          parts: parts.slice(partIndex, temporaryPartIndex),
+        });
+        temporaryPartIndex = partIndex;
+
+        const leftPart = parts.at(partIndex - 1);
+
+        if (leftPart) {
+          leftPart.body = leftPart.body.trimEnd();
+        }
       }
     }
+    temporaryLineNodes.push({
+      indentLevel,
+      parts: parts.slice(0, temporaryPartIndex),
+    });
+    temporaryLineNodes.reverse();
+
+    lineNodes.splice(
+      lineIndex,
+      1,
+      ...temporaryLineNodes.filter((lineNode) => lineNode.parts.length),
+    );
   }
 }
 
@@ -197,10 +199,10 @@ export function parseLineByLineAndAssemble(
 
   const lineNodes = parseLineByLine(formattedText, indentUnit, targetBraceNodes);
 
-  splitLineStartingWithClosingBrace(lineNodes);
+  splitLineContainingClosingBrace(lineNodes);
 
   if (options.braceStyle === 'allman') {
-    splitLineEndingWithOpeningBrace(lineNodes);
+    splitLineContainingOpeningBrace(lineNodes);
   }
 
   return assembleLine(lineNodes, indentUnit);
diff --git a/tests/v2-test/astro/issue-25/1tbs.test.ts b/tests/v2-test/astro/issue-25/1tbs.test.ts
index 398efbd..ee69d8f 100644
--- a/tests/v2-test/astro/issue-25/1tbs.test.ts
+++ b/tests/v2-test/astro/issue-25/1tbs.test.ts
@@ -40,6 +40,34 @@ const foo = {
     bar: {},
   };
 </script>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+---
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+---
+
+<script>
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+`,
+    output: `---
+const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  return null;
+};
+---
+
+<script>
+  const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+    return null;
+  };
+</script>
 `,
   },
   {
diff --git a/tests/v2-test/astro/issue-25/allman.test.ts b/tests/v2-test/astro/issue-25/allman.test.ts
index aae981e..45e5c58 100644
--- a/tests/v2-test/astro/issue-25/allman.test.ts
+++ b/tests/v2-test/astro/issue-25/allman.test.ts
@@ -40,6 +40,38 @@ const foo = {
     bar: {},
   };
 </script>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+---
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+---
+
+<script>
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+`,
+    output: `---
+const renderComponent = ({ handleSubmit = () =>
+{}, errors }) =>
+{
+  return null;
+};
+---
+
+<script>
+  const renderComponent = ({ handleSubmit = () =>
+  {}, errors }) =>
+  {
+    return null;
+  };
+</script>
 `,
   },
   {
diff --git a/tests/v2-test/astro/issue-25/stroustrup.test.ts b/tests/v2-test/astro/issue-25/stroustrup.test.ts
index 0ee08d5..c748a07 100644
--- a/tests/v2-test/astro/issue-25/stroustrup.test.ts
+++ b/tests/v2-test/astro/issue-25/stroustrup.test.ts
@@ -40,6 +40,34 @@ const foo = {
     bar: {},
   };
 </script>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+---
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+---
+
+<script>
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+`,
+    output: `---
+const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  return null;
+};
+---
+
+<script>
+  const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+    return null;
+  };
+</script>
 `,
   },
   {
diff --git a/tests/v2-test/babel/issue-25/1tbs.test.ts b/tests/v2-test/babel/issue-25/1tbs.test.ts
index d42c331..81386b6 100644
--- a/tests/v2-test/babel/issue-25/1tbs.test.ts
+++ b/tests/v2-test/babel/issue-25/1tbs.test.ts
@@ -25,6 +25,30 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v2-test/babel/issue-25/allman.test.ts b/tests/v2-test/babel/issue-25/allman.test.ts
index 7e52885..e6ad963 100644
--- a/tests/v2-test/babel/issue-25/allman.test.ts
+++ b/tests/v2-test/babel/issue-25/allman.test.ts
@@ -25,6 +25,32 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () =>
+{}, errors }) =>
+{
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v2-test/babel/issue-25/stroustrup.test.ts b/tests/v2-test/babel/issue-25/stroustrup.test.ts
index 59d714c..f01e622 100644
--- a/tests/v2-test/babel/issue-25/stroustrup.test.ts
+++ b/tests/v2-test/babel/issue-25/stroustrup.test.ts
@@ -25,6 +25,30 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v2-test/typescript/issue-25/1tbs.test.ts b/tests/v2-test/typescript/issue-25/1tbs.test.ts
index 7e951b9..f676adf 100644
--- a/tests/v2-test/typescript/issue-25/1tbs.test.ts
+++ b/tests/v2-test/typescript/issue-25/1tbs.test.ts
@@ -24,6 +24,30 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v2-test/typescript/issue-25/allman.test.ts b/tests/v2-test/typescript/issue-25/allman.test.ts
index 938a2f8..b723d82 100644
--- a/tests/v2-test/typescript/issue-25/allman.test.ts
+++ b/tests/v2-test/typescript/issue-25/allman.test.ts
@@ -24,6 +24,32 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () =>
+{}, errors }) =>
+{
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v2-test/typescript/issue-25/stroustrup.test.ts b/tests/v2-test/typescript/issue-25/stroustrup.test.ts
index 5282576..4cbe53e 100644
--- a/tests/v2-test/typescript/issue-25/stroustrup.test.ts
+++ b/tests/v2-test/typescript/issue-25/stroustrup.test.ts
@@ -24,6 +24,30 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v2-test/vue/issue-25/1tbs.test.ts b/tests/v2-test/vue/issue-25/1tbs.test.ts
index ed7ca9f..ea236a8 100644
--- a/tests/v2-test/vue/issue-25/1tbs.test.ts
+++ b/tests/v2-test/vue/issue-25/1tbs.test.ts
@@ -56,6 +56,50 @@ const foo = {
     Click Me
   </button>
 </template>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+<script setup lang="ts">
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="() => {
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+    }"
+  >
+    Click Me
+  </button>
+</template>
+`,
+    output: `<script setup lang="ts">
+const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="
+      () => {
+        const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+          return null;
+        };
+      }
+    "
+  >
+    Click Me
+  </button>
+</template>
 `,
   },
   {
diff --git a/tests/v2-test/vue/issue-25/allman.test.ts b/tests/v2-test/vue/issue-25/allman.test.ts
index a91e938..f371b62 100644
--- a/tests/v2-test/vue/issue-25/allman.test.ts
+++ b/tests/v2-test/vue/issue-25/allman.test.ts
@@ -57,6 +57,55 @@ const foo = {
     Click Me
   </button>
 </template>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+<script setup lang="ts">
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="() => {
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+    }"
+  >
+    Click Me
+  </button>
+</template>
+`,
+    output: `<script setup lang="ts">
+const renderComponent = ({ handleSubmit = () =>
+{}, errors }) =>
+{
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="
+      () =>
+      {
+        const renderComponent = ({ handleSubmit = () =>
+        {}, errors }) =>
+        {
+          return null;
+        };
+      }
+    "
+  >
+    Click Me
+  </button>
+</template>
 `,
   },
   {
diff --git a/tests/v2-test/vue/issue-25/stroustrup.test.ts b/tests/v2-test/vue/issue-25/stroustrup.test.ts
index c830281..b45c82f 100644
--- a/tests/v2-test/vue/issue-25/stroustrup.test.ts
+++ b/tests/v2-test/vue/issue-25/stroustrup.test.ts
@@ -56,6 +56,50 @@ const foo = {
     Click Me
   </button>
 </template>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+<script setup lang="ts">
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="() => {
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+    }"
+  >
+    Click Me
+  </button>
+</template>
+`,
+    output: `<script setup lang="ts">
+const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="
+      () => {
+        const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+          return null;
+        };
+      }
+    "
+  >
+    Click Me
+  </button>
+</template>
 `,
   },
   {
diff --git a/tests/v3-test/astro/issue-25/1tbs.test.ts b/tests/v3-test/astro/issue-25/1tbs.test.ts
index b15d20c..26eb936 100644
--- a/tests/v3-test/astro/issue-25/1tbs.test.ts
+++ b/tests/v3-test/astro/issue-25/1tbs.test.ts
@@ -40,6 +40,34 @@ const foo = {
     bar: {},
   };
 </script>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+---
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+---
+
+<script>
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+`,
+    output: `---
+const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  return null;
+};
+---
+
+<script>
+  const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+    return null;
+  };
+</script>
 `,
   },
   {
diff --git a/tests/v3-test/astro/issue-25/allman.test.ts b/tests/v3-test/astro/issue-25/allman.test.ts
index 09df198..343c197 100644
--- a/tests/v3-test/astro/issue-25/allman.test.ts
+++ b/tests/v3-test/astro/issue-25/allman.test.ts
@@ -40,6 +40,38 @@ const foo = {
     bar: {},
   };
 </script>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+---
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+---
+
+<script>
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+`,
+    output: `---
+const renderComponent = ({ handleSubmit = () =>
+{}, errors }) =>
+{
+  return null;
+};
+---
+
+<script>
+  const renderComponent = ({ handleSubmit = () =>
+  {}, errors }) =>
+  {
+    return null;
+  };
+</script>
 `,
   },
   {
diff --git a/tests/v3-test/astro/issue-25/stroustrup.test.ts b/tests/v3-test/astro/issue-25/stroustrup.test.ts
index d6d634a..f6db71a 100644
--- a/tests/v3-test/astro/issue-25/stroustrup.test.ts
+++ b/tests/v3-test/astro/issue-25/stroustrup.test.ts
@@ -40,6 +40,34 @@ const foo = {
     bar: {},
   };
 </script>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+---
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+---
+
+<script>
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+`,
+    output: `---
+const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  return null;
+};
+---
+
+<script>
+  const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+    return null;
+  };
+</script>
 `,
   },
   {
diff --git a/tests/v3-test/babel/issue-25/1tbs.test.ts b/tests/v3-test/babel/issue-25/1tbs.test.ts
index c681cda..7e2054b 100644
--- a/tests/v3-test/babel/issue-25/1tbs.test.ts
+++ b/tests/v3-test/babel/issue-25/1tbs.test.ts
@@ -25,6 +25,30 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v3-test/babel/issue-25/allman.test.ts b/tests/v3-test/babel/issue-25/allman.test.ts
index f25ee87..853b015 100644
--- a/tests/v3-test/babel/issue-25/allman.test.ts
+++ b/tests/v3-test/babel/issue-25/allman.test.ts
@@ -25,6 +25,32 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () =>
+{}, errors }) =>
+{
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v3-test/babel/issue-25/stroustrup.test.ts b/tests/v3-test/babel/issue-25/stroustrup.test.ts
index 99cb998..48b43c4 100644
--- a/tests/v3-test/babel/issue-25/stroustrup.test.ts
+++ b/tests/v3-test/babel/issue-25/stroustrup.test.ts
@@ -25,6 +25,30 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v3-test/typescript/issue-25/1tbs.test.ts b/tests/v3-test/typescript/issue-25/1tbs.test.ts
index 8569437..844b840 100644
--- a/tests/v3-test/typescript/issue-25/1tbs.test.ts
+++ b/tests/v3-test/typescript/issue-25/1tbs.test.ts
@@ -24,6 +24,30 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v3-test/typescript/issue-25/allman.test.ts b/tests/v3-test/typescript/issue-25/allman.test.ts
index 7969b05..5244810 100644
--- a/tests/v3-test/typescript/issue-25/allman.test.ts
+++ b/tests/v3-test/typescript/issue-25/allman.test.ts
@@ -24,6 +24,32 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () =>
+{}, errors }) =>
+{
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v3-test/typescript/issue-25/stroustrup.test.ts b/tests/v3-test/typescript/issue-25/stroustrup.test.ts
index a2921c1..5242d9d 100644
--- a/tests/v3-test/typescript/issue-25/stroustrup.test.ts
+++ b/tests/v3-test/typescript/issue-25/stroustrup.test.ts
@@ -24,6 +24,30 @@ const foo = {
     output: `const foo = {
   bar: {},
 };
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>
+  );
+};
+`,
+    output: `const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  const ref = React.createRef();
+
+  return render(
+    <StyleErrorsContextProvider initialState={errors}>
+      <PublishButton formRef={ref} handleSubmit={handleSubmit} />
+    </StyleErrorsContextProvider>,
+  );
+};
 `,
   },
   {
diff --git a/tests/v3-test/vue/issue-25/1tbs.test.ts b/tests/v3-test/vue/issue-25/1tbs.test.ts
index 69e5ab8..0ed4872 100644
--- a/tests/v3-test/vue/issue-25/1tbs.test.ts
+++ b/tests/v3-test/vue/issue-25/1tbs.test.ts
@@ -56,6 +56,50 @@ const foo = {
     Click Me
   </button>
 </template>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+<script setup lang="ts">
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="() => {
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+    }"
+  >
+    Click Me
+  </button>
+</template>
+`,
+    output: `<script setup lang="ts">
+const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="
+      () => {
+        const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+          return null;
+        };
+      }
+    "
+  >
+    Click Me
+  </button>
+</template>
 `,
   },
   {
diff --git a/tests/v3-test/vue/issue-25/allman.test.ts b/tests/v3-test/vue/issue-25/allman.test.ts
index 6e044f3..7b000c1 100644
--- a/tests/v3-test/vue/issue-25/allman.test.ts
+++ b/tests/v3-test/vue/issue-25/allman.test.ts
@@ -57,6 +57,55 @@ const foo = {
     Click Me
   </button>
 </template>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+<script setup lang="ts">
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="() => {
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+    }"
+  >
+    Click Me
+  </button>
+</template>
+`,
+    output: `<script setup lang="ts">
+const renderComponent = ({ handleSubmit = () =>
+{}, errors }) =>
+{
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="
+      () =>
+      {
+        const renderComponent = ({ handleSubmit = () =>
+        {}, errors }) =>
+        {
+          return null;
+        };
+      }
+    "
+  >
+    Click Me
+  </button>
+</template>
 `,
   },
   {
diff --git a/tests/v3-test/vue/issue-25/stroustrup.test.ts b/tests/v3-test/vue/issue-25/stroustrup.test.ts
index 11f2600..1cb6ce2 100644
--- a/tests/v3-test/vue/issue-25/stroustrup.test.ts
+++ b/tests/v3-test/vue/issue-25/stroustrup.test.ts
@@ -56,6 +56,50 @@ const foo = {
     Click Me
   </button>
 </template>
+`,
+  },
+  {
+    name: 'destructuring assignment with default value',
+    input: `
+<script setup lang="ts">
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="() => {
+const renderComponent = ({handleSubmit = () => {}, errors}) => {
+  return null;
+};
+    }"
+  >
+    Click Me
+  </button>
+</template>
+`,
+    output: `<script setup lang="ts">
+const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+  return null;
+};
+</script>
+
+<template>
+  <button
+    type="button"
+    @click="
+      () => {
+        const renderComponent = ({ handleSubmit = () => {}, errors }) => {
+          return null;
+        };
+      }
+    "
+  >
+    Click Me
+  </button>
+</template>
 `,
   },
   {