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The `path.extname()` method returns the extension of the `path`, from the last |
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occurrence of the `.` (period) character to end of string in the last portion of |
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-the `path`. If there is no `.` in the last portion of the `path`, or if the |
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-first character of the basename of `path` (see `path.basename()`) is `.`, then |
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-an empty string is returned. |
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+the `path`. If there is no `.` in the last portion of the `path`, or if |
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+there are no `.` characters other than the first character of |
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+the basename of `path` (see `path.basename()`) , an empty string is returned. |
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```js |
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path.extname('index.html'); |
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path.extname('.index'); |
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// Returns: '' |
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+ |
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+path.extname('.index.md'); |
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+// Returns: '.md' |
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``` |
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A [`TypeError`][] is thrown if `path` is not a string. |