How to use the variableDeclarator function from @babel/types
Find comprehensive JavaScript @babel/types.variableDeclarator code examples handpicked from public code repositorys.
@babel/types.variableDeclarator is a function in the @babel/types library that creates an AST node for a variable declaration in JavaScript.
GitHub: qooxdoo/qooxdoo
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} } } } let tmp = types.variableDeclaration("var", [ types.variableDeclarator( types.identifier("$$dbClassInfo"), literalValueToExpression(copyInfo) ) ]);
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true, ); let objectPattern = t.objectPattern([objectProperty]); let callee = t.identifier(USE_TRANSLATION_FUN); let useTranslationCall = t.callExpression(callee, []); let tDeclarator = t.variableDeclarator(objectPattern, useTranslationCall); const node = t.variableDeclaration('const', [tDeclarator]); return node; };
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How does @babel/types.variableDeclarator work?
@babel/types.variableDeclarator is a function provided by the @babel/types library that allows you to create an AST node for a variable declaration in JavaScript. To use @babel/types.variableDeclarator, you pass in two arguments: an identifier for the variable and an expression for the variable's initial value. The identifier is created using the @babel/types.identifier function, which takes a string as an argument and returns an identifier AST node. The expression for the variable's initial value can be any valid JavaScript expression, such as a literal value or a function call. Once you have created a variableDeclarator object using @babel/types.variableDeclarator, you can use it to create an AST node for a variable declaration statement using the @babel/types.variableDeclaration function. @babel/types.variableDeclarator is one of many functions provided by the @babel/types library that simplify working with abstract syntax trees in JavaScript. It is particularly useful when you need to programmatically create JavaScript code or manipulate existing code by working with AST nodes.
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/** * 构建数组声明语句,并加入到ast最开始处 */ unshiftArrayDeclaration() { let varDeclarator = t.variableDeclarator(t.identifier('kz_arr'), t.arrayExpression(this.bigArr)) this.bigArr = t.variableDeclaration('const', [varDeclarator]) this.ast.program.body.unshift(this.bigArr) // 调用浏览器的atob base64解码函数 就需要添加自定义解密函数
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GitHub: raxjs/miniapp
![raxjs profile picture](/raxjs.png?size=40)
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kuaishou: 'isKuaiShouMiniProgram' }; function variableDeclarationMethod(name, value) { return t.variableDeclaration('const', [ t.variableDeclarator(t.identifier(name), t.booleanLiteral(value)) ]); } /**
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Ai Example
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const t = require("@babel/types"); const variableIdentifier = t.identifier("myVariable"); const variableValue = t.stringLiteral("Hello, world!"); const variableDeclarator = t.variableDeclarator( variableIdentifier, variableValue ); console.log(variableDeclarator);
In this example, we first import the @babel/types library and define an identifier for the variable and a string literal for its initial value. We then use @babel/types.variableDeclarator to create a variableDeclarator object, passing in the identifier and string literal as arguments. Finally, we log the resulting variableDeclarator object to the console using console.log. When you run this code, you should see an AST node for a variable declarator logged to the console, which should look something like this: bash Copy code
GitHub: egoist/styled-vue
![egoist profile picture](/egoist.png?size=40)
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} // var v0 = vm => vm.color varDeclarations.push( t.variableDeclaration('var', [ t.variableDeclarator(t.identifier(variableId), quasi.expressions[i]) ]) ) // { '--v0': v0(vm) }
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path.scope.path.ensureBlock(); } path.getStatementParent().insertBefore( t.variableDeclaration('const', [ t.variableDeclarator(t.identifier(name), node) ]) ); return t.identifier(name);
GitHub: SheikhSajid/jsx2svelte
![SheikhSajid profile picture](/SheikhSajid.png?size=40)
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stateVariableName = lVal.elements[0].name; setterFunctionName = lVal.elements[1].name; const argNode = callExprPath.node.arguments[0]; const vDectr = t.variableDeclarator( t.identifier(stateVariableName), argNode );
+ 19 other calls in file
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let index = path.scope.generateUidIdentifier('index'); let callee = t.memberExpression(t.stringLiteral(dispenserStr), t.identifier('split')); //拼装split let arrayInit = t.callExpression(callee, [t.stringLiteral('|')]); //_array let varArray = t.variableDeclarator(array, arrayInit); //_index let varIndex = t.variableDeclarator(index, t.numericLiteral(0)); //let let dispenser = t.variableDeclaration('let', [varArray, varIndex]);
+ 23 other calls in file
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//拼装split let arrayInit = t.callExpression(callee, [t.stringLiteral('|')]); //_array let varArray = t.variableDeclarator(array, arrayInit); //_index let varIndex = t.variableDeclarator(index, t.numericLiteral(0)); //let let dispenser = t.variableDeclaration('let', [varArray, varIndex]); //拼装switch (+_array[_index++]) let uptExp = t.updateExpression('++', index);
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) let variableDeclarator = null if(this.replaceWithSequence) { variableDeclarator = t.variableDeclarator(this.element) this.statements.push(t.assignmentExpression( '=', this.element,
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} // var v0 = vm => vm.color varDeclarations.push( t.variableDeclaration('var', [ t.variableDeclarator(t.identifier(`v${i}`), quasi.expressions[i]) ]) ) // { '--v0': v0(vm, existing) }
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declaration /*: Node */ ) => { return Object.assign( t.variableDeclaration(kind, [ Object.assign( t.variableDeclarator(t.identifier(name), t.toExpression(declaration)), location(declaration) ), ]), location(declaration),
+ 9 other calls in file
GitHub: openapi/preset-effector
![openapi profile picture](/openapi.png?size=40)
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const contract = responses[code].content ? createContract(responses[code].content['application/json'].schema) : createNullContract(); const ast = t.exportNamedDeclaration( t.variableDeclaration('const', [ t.variableDeclarator(t.identifier(contractName), contract), ]), ); if (responses[code].description) { addComment(ast, responses[code].description);
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GitHub: KinoAR/LunaTeaNapkin
![KinoAR profile picture](/KinoAR.png?size=40)
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if (init && init.object && init.object.name === "_$LTGlobals_$") { const { property } = init; const newExpression = tt.variableDeclarator(tt.identifier(id.name), tt.identifier(property.name)); return newExpression; } }
GitHub: N0taN3rd/Emu
![N0taN3rd profile picture](/N0taN3rd.png?size=40)
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) } static declarePropGetterWinXProto (kind, name, x, prop) { return btypes.variableDeclaration(kind, [ btypes.variableDeclarator( EH.makeIdentifier(name), btypes.callExpression(rewriterProps.getOGetter, [ EH.windowXprototype(x), btypes.stringLiteral(prop)
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GitHub: suchipi/tofu
![suchipi profile picture](/suchipi.png?size=40)
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name: 'for', label: 'for...of', create: (child = t.blockStatement([t.emptyStatement()])) => t.forOfStatement( t.variableDeclaration('const', [ t.variableDeclarator(t.identifier('item')) ]), t.identifier('iterable'), child ),
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function declareVariable(id, init) { return types.variableDeclaration( 'const', [ types.variableDeclarator(types.identifier(id), types.identifier(init)) ] ); }
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result = btypes.identifier(`testResult`) } clonedPath.arguments[0] = result path.insertBefore( btypes.variableDeclaration('const', [ btypes.variableDeclarator(result, awaitexpr) ]) ) path.replaceWith(clonedPath) wasChange = true
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} } let executed = getName(asset, 'executed'); decls.push( t.variableDeclarator(t.identifier(executed), t.booleanLiteral(false)) ); let init = t.functionDeclaration( getIdentifier(asset, 'init'),
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declar._blockHoist = blockHoist; [declarPath] = path.unshiftContainer("body", [declar]); if (!unique) path.setData(dataKey, declarPath); } const declarator = t.variableDeclarator(opts.id, opts.init); declarPath.node.declarations.push(declarator); this.registerBinding(kind, declarPath.get("declarations").pop()); }
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@babel/types.identifier is the most popular function in @babel/types (20936 examples)