How to use the logicalExpression function from @babel/types

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

@babel/types.logicalExpression represents a logical expression node in an Abstract Syntax Tree (AST).

babel.js

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}

const currId = t.identifier(CURR_ID)

const COND = ARG
  ? t.logicalExpression('&&', t.identifier(ARG), currId)
  : currId

return expressions.concat({
  ID: t.StringLiteral(id),

+ 9 other calls in file

modelUtils.js

GitHub: acpplife/create-code

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      )
    )
  )
]),
t.ifStatement( // IfStatement
  t.logicalExpression(
    "&&",
    t.identifier('response'),
    t.binaryExpression(
      "===",

+ 5 other calls in file

How does @babel/types.logicalExpression work?

@babel/types.logicalExpression is a method in the @babel/types module that creates an AST (Abstract Syntax Tree) node representing a logical expression (either && or ||) in a JavaScript code block, with a left-hand and right-hand side argument. It takes three arguments: the operator (&& or ||), the left-hand side argument, and the right-hand side argument. It then returns an AST node representing the logical expression.

expressionHelpers.js

GitHub: N0taN3rd/Emu

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    )
  )
}

static htmlElementOverrideGauard (name) {
  return btypes.logicalExpression(
    '&&',
    EH.memberExpression(Names.windowName, name),
    EH.windowXprototype(name)
  )

+ 11 other calls in file

vueConfig.js

GitHub: wsrh8888/vue-cli-plugin-xuwu

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    types.identifier('base'),
    types.stringLiteral('')
  )
]),
types.ifStatement(
  types.logicalExpression(
    '&&',
    types.binaryExpression(
      '===',
      types.memberExpression(

+ 5 other calls in file

Ai Example

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

const a = t.identifier("a");
const b = t.identifier("b");
const node = t.logicalExpression("&&", a, b);

In this example, t is imported from @babel/types. We create two identifier nodes with the names a and b, and then create a logical expression node that represents the logical AND operation between a and b using the t.logicalExpression function. The resulting node is assigned to the node variable.

_utils.js

GitHub: iammadanlal/next-blog

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var concat = function concat(a, b) {
  return t.binaryExpression('+', a, b);
};


var and = function and(a, b) {
  return t.logicalExpression('&&', a, b);
};


var or = function or(a, b) {
  return t.logicalExpression('||', a, b);

templateHandler.js

GitHub: HandsomeWalker/v2r

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if (ifConditions) {
  // <div v-if="show"/> -> {show && <div/>} | {show ? foo : bar} | {(() => {if (show) return foo})()}
  if (ifConditions.length === 1) {
    wrappedElement = t.jSXExpressionContainer(
      t.logicalExpression("&&", t.identifier(ifConditions[0].exp), element)
    );
  } else if (ifConditions.length === 2) {
    const { block: elseBlock } = ifConditions[1];
    const elseElement = initTemplate(elseBlock, null, attrsCollector);

+ 44 other calls in file

member-expr.js

GitHub: dcloudio/uni-app

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      })
      test = test.elements[0]
      if (path.key === 'alternate') {
        test = t.unaryExpression('!', test)
      }
      tests = tests ? t.logicalExpression('&&', test, tests) : test
    }
    path = path.parentPath
  }
}

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