69 lines
1.5 KiB
Markdown
69 lines
1.5 KiB
Markdown
# babel-core
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> Babel compiler core.
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```javascript
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var babel = require("babel-core");
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import { transform } from 'babel-core';
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import * as babel from 'babel-core';
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```
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## babel.transform(code: string, [options?](/docs/usage/options): Object)
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Transforms the passed in `code`. Returning an object with the generated code,
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source map, and AST.
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```js
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babel.transform(code, options) // => { code, map, ast }
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```
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**Example**
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```js
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var result = babel.transform("code();", options);
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result.code;
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result.map;
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result.ast;
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```
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## babel.transformFile(filename: string, [options?](/docs/usage/options): Object, callback: Function)
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Asynchronously transforms the entire contents of a file.
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```js
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babel.transformFile(filename, options, callback)
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```
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**Example**
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```js
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babel.transformFile("filename.js", options, function (err, result) {
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result; // => { code, map, ast }
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});
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```
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## babel.transformFileSync(filename: string, [options?](/docs/usage/options): Object)
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Synchronous version of `babel.transformFile`. Returns the transformed contents of
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the `filename`.
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```js
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babel.transformFileSync(filename, options) // => { code, map, ast }
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```
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**Example**
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```js
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babel.transformFileSync("filename.js", options).code;
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```
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## babel.transformFromAst(ast: Object, code?: string, [options?](/docs/usage/options): Object)
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Given, an [AST](https://astexplorer.net/), transform it.
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```js
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const code = "if (true) return;";
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const ast = babylon.parse(code, { allowReturnOutsideFunction: true });
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const { code, map, ast } = babel.transformFromAst(ast, code, options);
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```
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