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https://github.com/dsherret/code-block-writer
Code writer for JavaScript and TypeScript code.
https://github.com/dsherret/code-block-writer
Last synced: 3 days ago
JSON representation
Code writer for JavaScript and TypeScript code.
- Host: GitHub
- URL: https://github.com/dsherret/code-block-writer
- Owner: dsherret
- License: mit
- Created: 2015-10-13T23:42:29.000Z (about 9 years ago)
- Default Branch: main
- Last Pushed: 2024-10-05T13:29:59.000Z (3 months ago)
- Last Synced: 2025-01-02T22:04:40.760Z (10 days ago)
- Language: TypeScript
- Homepage:
- Size: 438 KB
- Stars: 200
- Watchers: 3
- Forks: 4
- Open Issues: 4
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
- awesome-javascript - code-block-writer
- awesome-javascript - code-block-writer
README
# code-block-writer
[](https://badge.fury.io/js/code-block-writer)
[](https://github.com/dsherret/code-block-writer/actions?query=workflow%3ACI)
[](https://jsr.io/@david/code-block-writer)
[](http://github.com/badges/stability-badges)
Code writer for JavaScript and TypeScript code.
With Deno:
```ts
deno add jsr:@david/code-block-writer
```
Or with Node:
```
npm install --save code-block-writer
```
## Example
```typescript
// import CodeBlockWriter from "code-block-writer"; // for npm
import CodeBlockWriter from "@david/code-block-writer";
const writer = new CodeBlockWriter({
// optional options
newLine: "\r\n", // default: "\n"
indentNumberOfSpaces: 2, // default: 4
useTabs: false, // default: false
useSingleQuote: true // default: false
});
writer.write("class MyClass extends OtherClass").block(() => {
writer.writeLine(`@MyDecorator(1, 2)`);
writer.write(`myMethod(myParam: any)`).block(() => {
writer.write("return this.post(").quote("myArgument").write(");");
});
});
console.log(writer.toString());
```
Outputs (using "\r\n" for newlines):
```js
class MyClass extends OtherClass {
@MyDecorator(1, 2)
myMethod(myParam: any) {
return this.post('myArgument');
}
}
```
## Methods
- `block(block?: () => void)` - Indents all the code written within and surrounds it in braces.
- `inlineBlock(block?: () => void)` - Same as block, but doesn't add a space before the first brace and doesn't add a newline at the end.
- `getLength()` - Get the current number of characters.
- `writeLine(text: string)` - Writes some text and adds a newline.
- `newLine()` - Writes a newline.
- `newLineIfLastNot()` - Writes a newline if what was written last wasn't a newline.
- `blankLine()` - Writes a blank line. Does not allow consecutive blank lines.
- `blankLineIfLastNot()` - Writes a blank line if what was written last wasn't a blank line.
- `quote()` - Writes a quote character.
- `quote(text: string)` - Writes text surrounded in quotes.
- `indent(times?: number)` - Indents the current line. Optionally indents multiple times when providing a number.
- `indent(block?: () => void)` - Indents a block of code.
- `space(times?: number)` - Writes a space. Optionally writes multiple spaces when providing a number.
- `spaceIfLastNot()` - Writes a space if the last was not a space.
- `tab(times?: number)` - Writes a tab. Optionally writes multiple tabs when providing a number.
- `tabIfLastNot()` - Writes a tab if the last was not a tab.
- `write(text: string)` - Writes some text.
- `conditionalNewLine(condition: boolean)` - Writes a newline if the condition is matched.
- `conditionalBlankLine(condition: boolean)` - Writes a blank line if the condition is matched.
- `conditionalWrite(condition: boolean, text: string)` - Writes if the condition is matched.
- `conditionalWrite(condition: boolean, textFunc: () => string)` - Writes if the condition is matched.
- `conditionalWriteLine(condition: boolean, text: string)` - Writes some text and adds a newline if the condition is matched.
- `conditionalWriteLine(condition: boolean, textFunc: () => string)` - Writes some text and adds a newline if the condition is matched.
- `setIndentationLevel(indentationLevel: number)` - Sets the current indentation level.
- `setIndentationLevel(whitespaceText: string)` - Sets the current indentation level based on the provided whitespace text.
- `withIndentationLevel(indentationLevel: number, action: () => void)` - Sets the indentation level within the provided action.
- `withIndentationLevel(whitespaceText: string, action: () => void)` - Sets the indentation level based on the provided whitespace text within the action.
- `getIndentationLevel()` - Gets the current indentation level.
- `queueIndentationLevel(indentationLevel: number)` - Queues an indentation level to be used once a new line is written.
- `queueIndentationLevel(whitespaceText: string)` - Queues an indentation level to be used once a new line is written based on the provided whitespace text.
- `hangingIndent(action: () => void)` - Writes the code within the action with hanging indentation.
- `hangingIndentUnlessBlock(action: () => void)` - Writes the code within the action with hanging indentation unless a block is written going from the first line to the second.
- `closeComment()` - Writes text to exit a comment if in a comment.
- `unsafeInsert(pos: number, text: string)` - Inserts text into the writer. This will not update the writer's state. Read more in its jsdoc.
- `isInComment()` - Gets if the writer is currently in a comment.
- `isAtStartOfFirstLineOfBlock()` - Gets if the writer is currently at the start of the first line of the text, block, or indentation block.
- `isOnFirstLineOfBlock()` - Gets if the writer is currently on the first line of the text, block, or indentation block.
- `isInString()` - Gets if the writer is currently in a string.
- `isLastNewLine()` - Gets if the writer last wrote a newline.
- `isLastBlankLine()` - Gets if the writer last wrote a blank line.
- `isLastSpace()` - Gets if the writer last wrote a space.
- `isLastTab()` - Gets if the writer last wrote a tab.
- `getLastChar()` - Gets the last character written.
- `endsWith(text: string)` - Gets if the writer ends with the provided text.
- `iterateLastChars(action: (char: string, index: number) => T | undefined): T | undefined` - Iterates over the writer's characters in reverse order, stopping once a non-null or undefined value is returned and returns that value.
- `iterateLastCharCodes(action: (charCode: number, index: number) => T | undefined): T | undefined` - A slightly faster version of `iterateLastChars` that doesn't allocate a string per character.
- `getOptions()` - Gets the writer options.
- `toString()` - Gets the string.
## Other Features
- Does not indent within strings.
- Escapes newlines within double and single quotes created with `.quote(text)`.
## C# Version
See [CodeBlockWriterSharp](https://github.com/dsherret/CodeBlockWriterSharp).