10 examples of 'which is the return statement in react' in JavaScript

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72export function ReturnStatement(node) {
73 let expr = node.argument;
74 this.resolveType(expr);
75 let returnType = expr.resolvedType.value;
76 if (!this.returnContext) {
77 this.throw(`Invalid return context`, node);
78 }
79 let returnCtx = this.returnContext;
80 let target = this.getDeclarationName(this.returnContext);
81
82 // auto inference node return type
83 // if node doesnt return, but a return
84 // statement got found inside
85 if (returnCtx.type.value === "Void") {
86 if (INFER_FUNC_TYPE) {
87 returnCtx.isInferenced = true;
88 returnCtx.type = expr.resolvedType;
89 } else {
90 this.throw(`Inference function return types is disabled!`);
91 }
92 } else {
93 if (returnCtx.isInferenced && !this.compiled) {
94 this.throw(`Cannot inference '${target}' return type`);
95 }
96 }
97
98 let returnCtxType = returnCtx.type.value;
99 if (returnCtxType === "Void") {
100 this.throw(`Invalid return statement in '${target}'`, node);
101 }
102 if (returnCtxType !== returnType) {
103 this.throw(`'${target}' returns '${returnCtxType}' but got '${returnType}'`, node);
104 }
105 this.resolveReturnStatement(node);
106}
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17module.exports = Statement.extends(KIND, function Return(expr, docs, location) {
18 Statement.apply(this, [KIND, docs, location]);
19 this.expr = expr;
20});
73export function emitReturnStatement(statement: ts.ReturnStatement, generator: LLVMGenerator): void {
74 if (statement.expression) {
75 generator.builder.createRet(generator.emitExpression(statement.expression));
76 } else {
77 generator.builder.createRetVoid();
78 }
79}
37function _default(path, scope = path.scope) {
38 const {
39 node
40 } = path;
41 const container = t.functionExpression(null, [], node.body, node.generator, node.async);
42 let callee = container;
43 let args = [];
44 (0, _helperHoistVariables.default)(path, id => scope.push({
45 id
46 }));
47 const state = {
48 foundThis: false,
49 foundArguments: false
50 };
51 path.traverse(visitor, state);
52
53 if (state.foundArguments || state.foundThis) {
54 callee = t.memberExpression(container, t.identifier("apply"));
55 args = [];
56
57 if (state.foundThis) {
58 args.push(t.thisExpression());
59 }
60
61 if (state.foundArguments) {
62 if (!state.foundThis) args.push(t.nullLiteral());
63 args.push(t.identifier("arguments"));
64 }
65 }
66
67 let call = t.callExpression(callee, args);
68 if (node.generator) call = t.yieldExpression(call, true);
69 return t.returnStatement(call);
70}
227toString() {
228 return "return " + this.argument
229}
84public visitNode(node: ts.Node) {
85 if (isElementAccessExpression(node))
86 this._checkAccess(node);
87
88 super.visitNode(node);
89}
49function _default(path, scope) {
50 if (scope === void 0) {
51 scope = path.scope;
52 }
53
54 var node = path.node;
55 var container = t().functionExpression(null, [], node.body, node.generator, node.async);
56 var callee = container;
57 var args = [];
58 (0, _helperHoistVariables().default)(path, function (id) {
59 return scope.push({
60 id: id
61 });
62 });
63 var state = {
64 foundThis: false,
65 foundArguments: false
66 };
67 path.traverse(visitor, state);
68
69 if (state.foundArguments) {
70 callee = t().memberExpression(container, t().identifier("apply"));
71 args = [];
72
73 if (state.foundThis) {
74 args.push(t().thisExpression());
75 }
76
77 if (state.foundArguments) {
78 if (!state.foundThis) args.push(t().nullLiteral());
79 args.push(t().identifier("arguments"));
80 }
81 }
82
83 var call = t().callExpression(callee, args);
84 if (node.generator) call = t().yieldExpression(call, true);
85 return t().returnStatement(call);
86}
100function hasFinalReturn(statements: t.Statement[]): boolean {
101 return t.isReturnStatement(last(statements));
102}
58visitReturnStatement(astNode) {
59 log.debug("Visiting ReturnStatement");
60 var parent = astNode.getParent();
61 var parentView = _.find(this._viewsList, ['_model',parent]);
62 //TODO create new return statement view and call render
63 return false;
64}
702export function createReturnStatement(expression) {
703 return new ReturnStatement(null, expression);
704}

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