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How to use the isExpressionStatement function from @babel/types

Find comprehensive JavaScript @babel/types.isExpressionStatement code examples handpicked from public code repositorys.

@babel/types.isExpressionStatement is a function that checks if a given AST node is an ExpressionStatement.

transformJS.js

GitHub: baidu/wx2

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    return generateResult.code;
};


function isAopBlock(path, block, AOP, cb) {
    t.isExpressionStatement(block)
    && t.isCallExpression(block.expression)
    && t.isMemberExpression(get(block, 'expression.callee'))
    && get(block, 'expression.callee.property.name') === 'after'
    && cb(path, block, AOP);
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vue-ast-helpers.js

GitHub: icai/vue-to-react

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    `);
}
path.traverse({
    ThisExpression (thisPath) {
        const parentNode = thisPath.parentPath.parentPath.parent;
        const isValid = t.isExpressionStatement(parentNode) || 
            t.isVariableDeclaration(parentNode) ||
            t.isBlockStatement(parentNode) || 
            t.isJSXElement(parentNode) || 
            t.isCallExpression(parentNode) ||
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How does @babel/types.isExpressionStatement work?

@babel/types.isExpressionStatement is a function that takes an AST node and returns true if the node is an ExpressionStatement or false otherwise. The function first checks if the node is an object and has a type property, which is a string indicating the type of the node. If the type property is "ExpressionStatement", then the function returns true. If the type property is not "ExpressionStatement", then the function returns false. The purpose of this function is to allow developers to easily check whether a given node in an abstract syntax tree (AST) represents an expression statement, which is a statement that consists of an expression that is evaluated for its side effects, such as assigning a value to a variable or calling a function.

Ast_code.js

GitHub: polestar-HF/Spider-project

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//当前case下的所有节点
var targetBody = case_list[i].consequent;

// 删除break节点，和break节点的上一个节点的一些无用代码
if (t.isBreakStatement(targetBody[targetBody.length - 1])
    && t.isExpressionStatement(targetBody[targetBody.length - 2])
    && targetBody[targetBody.length - 2].expression.right.object.object.callee.object.name == "khCTZ") {

    // 提取break节点的上一个节点AJgjJ.EMf()后面的两个索引值
    var change_arg_f = targetBody[targetBody.length - 2].expression.right.object.property.value;
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move-cursor.ts

GitHub: suchipi/tofu

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    t.isTemplateLiteral,
    t.isTemplateElement,
    t.isIdentifier,
    t.isNumericLiteral,
    t.isCallExpression,
    t.isExpressionStatement
  ].some(check => check(node));

export type Cursor = [number, number];
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Ai Example

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const t = require("@babel/types");

const ast = t.file(
  t.program([
    t.expressionStatement(
      t.callExpression(t.identifier("console.log"), [
        t.stringLiteral("Hello World!"),
      ])
    ),
  ])
);

const node = ast.program.body[0];

console.log(t.isExpressionStatement(node)); // true
console.log(t.isVariableDeclaration(node)); // false

In the above example, we create an abstract syntax tree (AST) using @babel/types, and then we use t.isExpressionStatement to check whether a node inside the AST is an expression statement. The function returns true because the node is indeed an expression statement.

utils.js

GitHub: Ahaochan/js_deobfuscation

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simple1: function (ast) {
    // 对象合并
    traverse(ast, {
        VariableDeclarator(path) {
            if (types.isObjectExpression(path.node.init)) {
                // path.getAllNextSiblings().filter(s => types.isExpressionStatement(s));
                for (let expressionStatementPath of path.parentPath.getAllNextSiblings().filter(s => types.isExpressionStatement(s))) {
                    let expression = expressionStatementPath.node.expression;
                    if (types.isAssignmentExpression(expression) && expression.operator === '=') {
                        if (types.isMemberExpression(expression.left) && expression.left.object.name === path.node.id.name && types.isIdentifier(expression.left.property)) {
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event.js

GitHub: yusongjohn/mock-uniapp-for-wxmp

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// "click":function($event) {click1(item);click2(item);}
const body = funcPath.node.body && funcPath.node.body.body
const funcParams = funcPath.node.params
if (body && body.length && funcParams && funcParams.length === 1) {
  const exprStatements = body.filter(node => {
    return t.isExpressionStatement(node) && t.isCallExpression(node.expression)
  })
  if (exprStatements.length === body.length) {
    const paramPath = funcPath.get('params')[0]
    const paramName = paramPath.node.name
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react-annotated.js

GitHub: eniolam1000752/babel-plugin-react-annotated

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function initAnnotationParser(annotation) {
  var params = annotation.match(/(?<=(\()).*(?=(\)))/g)[0].split(",");
  params = params.length === 1 && params[0] === "" ? [] : params;
  params = params.filter(function (item, index) {
    return types.isExpressionStatement(template(item)());
  }).map(function (item) {
    return template(item)().expression;
  }); // console.log("PARAMETERS TO BE PARSED: ", params);
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test.js

GitHub: c323fff25/Spider

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AssignmentExpression(path){
    let obj_name = path.get('right.callee')
    if (!t.isMemberExpression(obj_name)) return;
    if (!t.isStringLiteral(obj_name.node.object) && !t.isStringLiteral(obj_name.node.property, {value: 'split'})) return;
    let var_path =  path.findParent(function (p){
        return t.isExpressionStatement(p)
    })
    let while_path = var_path.getNextSibling()
    let my_arr = []
    while_path.node.body.body[0].cases.map(function(p){
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parentheses.js

GitHub: ds-sampaio/ClicouChegouApp

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let node = printStack[i];
i--;
let parent = printStack[i];

while (i >= 0) {
  if (expressionStatement && t.isExpressionStatement(parent, {
    expression: node
  }) || exportDefault && t.isExportDefaultDeclaration(parent, {
    declaration: node
  }) || arrowBody && t.isArrowFunctionExpression(parent, {
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