TypeScript types.expressionStatement函数代码示例

OStack程序员社区-中国程序员成长平台 › 门户 › 编程› TypeScript›TypeScript教程

原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文整理汇总了TypeScript中@babel/types.expressionStatement函数的典型用法代码示例。如果您正苦于以下问题：TypeScript expressionStatement函数的具体用法？TypeScript expressionStatement怎么用？TypeScript expressionStatement使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了expressionStatement函数的2个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的TypeScript代码示例。

示例1: BinaryExpression

        }
    }
});

// Examples from https://github.com/thejameskyle/babel-handbook/blob/master/translations/en/plugin-handbook.md#writing-your-first-babel-plugin

const v1: Visitor = {
    BinaryExpression(path) {
        if (t.isIdentifier(path.node.left)) {
            // ...
        }
        path.replaceWith(
            t.binaryExpression("**", path.node.left, t.numericLiteral(2))
        );
        path.parentPath.replaceWith(
            t.expressionStatement(t.stringLiteral("Anyway the wind blows, doesn't really matter to me, to me."))
        );
        path.parentPath.remove();
    },

    Identifier(path) {
        if (path.isReferencedIdentifier()) {
            // ...
        }
        if (t.isQualifiedTypeIdentifier(path.node, path.parent)) {
            // ...
        }
    },

    ReturnStatement(path) {
        path.replaceWithMultiple([

开发者ID:AlexGalays，项目名称:DefinitelyTyped，代码行数:31，代码来源:babel__traverse-tests.ts

示例2: plugin


//.........这里部分代码省略.........

      if (path.node.body.type !== "BlockStatement") {
        // Technically it might not be safe to make this conversion
        // because it affects scoping for let/const inside the body
        // ...although that's not usually what you do inside a for in body
        path.node.body = ignoreNode(
          babel.types.blockStatement([path.node.body])
        );
      }

      const body = path.node.body.body;

      let forInRightValueIdentifier = ignoreNode(
        path.scope.generateUidIdentifier("__forInRightVal")
      );

      // insertBefore causes this ForInStatement to be visited again
      // if a block body is introduced for the parent (e.g. if the parent
      // was a single-statement if statement before)
      // Prevent processing this ForInStatement twice
      path.node.ignore = true;

      path.insertBefore(
        ignoreNode(
          t.variableDeclaration("let", [
            t.variableDeclarator(forInRightValueIdentifier, path.node.right)
          ])
        )
      );

      path.node.right = forInRightValueIdentifier;

      var assignment = ignoreNode(
        t.expressionStatement(
          ignoreNode(
            t.assignmentExpression(
              "=",
              ignoredIdentifier(getTrackingVarName(varName)),
              ignoredCallExpression(
                FunctionNames.getObjectPropertyNameTrackingValue,
                [forInRightValueIdentifier, ignoredIdentifier(varName)]
              )
            )
          )
        )
      );
      body.unshift(assignment);

      if (isNewVariable) {
        var declaration = ignoreNode(
          // Note: this needs to be let or else there could be conflict with
          // a var from parent scope
          t.variableDeclaration(varKind, [
            t.variableDeclarator(ignoredIdentifier(getTrackingVarName(varName)))
          ])
        );
        body.unshift(declaration);
      }
    }
  };

  Object.keys(operations).forEach(key => {
    var operation = operations[key];
    key = key[0].toUpperCase() + key.slice(1);
    if (operation.visitor) {
      if (visitors[key]) {

开发者ID:mattzeunert，项目名称:fromjs，代码行数:67，代码来源:babelPlugin.ts

注：本文中的@babel/types.expressionStatement函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。