Download next.js/packages/next/src/build/babel/plugins/jsx-pragma.ts from Devendra174/react-code-dataset: direct link, hf CLI and curl.
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3.77 kB
| import type { | |
| NodePath, | |
| types as BabelTypes, | |
| } from 'next/dist/compiled/babel/core' | |
| import type { PluginObj } from 'next/dist/compiled/babel/core' | |
| import jsx from 'next/dist/compiled/babel/plugin-syntax-jsx' | |
| export default function ({ | |
| types: t, | |
| }: { | |
| types: typeof BabelTypes | |
| }): PluginObj<any> { | |
| return { | |
| inherits: jsx, | |
| visitor: { | |
| JSXElement(_path, state) { | |
| state.set('jsx', true) | |
| }, | |
| // Fragment syntax is still JSX since it compiles to createElement(), | |
| // but JSXFragment is not a JSXElement | |
| JSXFragment(_path, state) { | |
| state.set('jsx', true) | |
| }, | |
| Program: { | |
| exit(path: NodePath<BabelTypes.Program>, state) { | |
| if (state.get('jsx')) { | |
| const pragma = t.identifier(state.opts.pragma) | |
| let importAs = pragma | |
| // if there's already a React in scope, use that instead of adding an import | |
| const existingBinding = | |
| state.opts.reuseImport !== false && | |
| state.opts.importAs && | |
| path.scope.getBinding(state.opts.importAs) | |
| // var _jsx = _pragma.createElement; | |
| if (state.opts.property) { | |
| if (state.opts.importAs) { | |
| importAs = t.identifier(state.opts.importAs) | |
| } else { | |
| importAs = path.scope.generateUidIdentifier('pragma') | |
| } | |
| const mapping = t.variableDeclaration('var', [ | |
| t.variableDeclarator( | |
| pragma, | |
| t.memberExpression( | |
| importAs, | |
| t.identifier(state.opts.property) | |
| ) | |
| ), | |
| ]) | |
| // if the React binding came from a require('react'), | |
| // make sure that our usage comes after it. | |
| let newPath: NodePath<BabelTypes.VariableDeclaration> | |
| if ( | |
| existingBinding && | |
| t.isVariableDeclarator(existingBinding.path.node) && | |
| t.isCallExpression(existingBinding.path.node.init) && | |
| t.isIdentifier(existingBinding.path.node.init.callee) && | |
| existingBinding.path.node.init.callee.name === 'require' | |
| ) { | |
| ;[newPath] = | |
| existingBinding.path.parentPath.insertAfter(mapping) | |
| } else { | |
| ;[newPath] = path.unshiftContainer('body', mapping) | |
| } | |
| for (const declar of newPath.get('declarations')) { | |
| path.scope.registerBinding( | |
| newPath.node.kind, | |
| declar as NodePath<BabelTypes.Node> | |
| ) | |
| } | |
| } | |
| if (!existingBinding) { | |
| const importSpecifier = t.importDeclaration( | |
| [ | |
| state.opts.import | |
| ? // import { $import as _pragma } from '$module' | |
| t.importSpecifier( | |
| importAs, | |
| t.identifier(state.opts.import) | |
| ) | |
| : state.opts.importNamespace | |
| ? t.importNamespaceSpecifier(importAs) | |
| : // import _pragma from '$module' | |
| t.importDefaultSpecifier(importAs), | |
| ], | |
| t.stringLiteral(state.opts.module || 'react') | |
| ) | |
| const [newPath] = path.unshiftContainer('body', importSpecifier) | |
| for (const specifier of newPath.get('specifiers')) { | |
| path.scope.registerBinding( | |
| 'module', | |
| specifier as NodePath<BabelTypes.Node> | |
| ) | |
| } | |
| } | |
| } | |
| }, | |
| }, | |
| }, | |
| } | |
| } | |