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June 14, 2024 20:55
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| export function extractFunctions(fileContents: string): ExtractFunctionResponse[] { | |
| const functions: ExtractFunctionResponse[] = []; | |
| try { | |
| const ast = parser.parse(fileContents, { | |
| sourceType: 'module', | |
| plugins: ['typescript', 'jsx'], | |
| allowImportExportEverywhere: true, | |
| allowAwaitOutsideFunction: true, | |
| allowReturnOutsideFunction: true, | |
| allowSuperOutsideMethod: true, | |
| allowUndeclaredExports: true, | |
| errorRecovery: true, | |
| }); | |
| traverse(ast, { | |
| FunctionDeclaration(path) { | |
| const node = path.node; | |
| functions.push({ | |
| function: fileContents.slice(node.start, node.end), | |
| functionName: node.id.name, | |
| }); | |
| }, | |
| VariableDeclarator(path) { | |
| const node = path.node; | |
| if (node.init && types.isArrowFunctionExpression(node.init)) { | |
| functions.push({ | |
| function: fileContents.slice(node.start, node.end), | |
| functionName: node.id.name, | |
| }); | |
| } | |
| }, | |
| ExportNamedDeclaration(path) { | |
| const node = path.node; | |
| if (node.declaration) { | |
| if (types.isVariableDeclaration(node.declaration)) { | |
| node.declaration.declarations.forEach((declarator) => { | |
| if ( | |
| declarator.init && | |
| types.isArrowFunctionExpression(declarator.init) | |
| ) { | |
| functions.push({ | |
| function: fileContents.slice(declarator.start, declarator.end), | |
| functionName: declarator.id.name, | |
| }); | |
| } | |
| }); | |
| } else if (types.isFunctionDeclaration(node.declaration)) { | |
| functions.push({ | |
| function: fileContents.slice( | |
| node.declaration.start, | |
| node.declaration.end | |
| ), | |
| functionName: node.declaration.id.name, | |
| }); | |
| } | |
| } else if (node.specifiers && node.specifiers.length > 0) { | |
| node.specifiers.forEach((specifier) => { | |
| if (types.isExportSpecifier(specifier)) { | |
| const exportedName = specifier.exported.name; | |
| const binding = path.scope.getBinding(exportedName); | |
| if (binding && binding.path.isVariableDeclarator()) { | |
| const declaratorNode = binding.path.node; | |
| if ( | |
| declaratorNode.init && | |
| types.isArrowFunctionExpression(declaratorNode.init) | |
| ) { | |
| functions.push({ | |
| function: fileContents.slice( | |
| declaratorNode.start, | |
| declaratorNode.end | |
| ), | |
| functionName: exportedName, | |
| }); | |
| } | |
| } | |
| } | |
| }); | |
| } | |
| }, | |
| }); | |
| } catch (error) { | |
| console.error('Error parsing file:', error); | |
| } | |
| // remove duplicates with the same function name | |
| return functions.filter((func, index, self) => | |
| index === self.findIndex((f) => f.functionName === func.functionName) | |
| ); | |
| } |
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