function varDeclToExpr()

in packages/transform/src/hoist.js [21:51]

• 20 lines of code
• 5 McCabe index (conditional complexity)

  function varDeclToExpr({ node: vdec, scope }, includeIdentifiers) {
    t.assertVariableDeclaration(vdec);
    // TODO assert.equal(vdec.kind, "var");
    let exprs = [];

    vdec.declarations.forEach(function(dec) {
      // Note: We duplicate 'dec.id' here to ensure that the variable declaration IDs don't
      // have the same 'loc' value, since that can make sourcemaps and retainLines behave poorly.
      vars[dec.id.name] = t.identifier(dec.id.name);

      // Remove the binding, to avoid "duplicate declaration" errors when it will
      // be injected again.
      scope.removeBinding(dec.id.name);

      if (dec.init) {
        exprs.push(t.assignmentExpression(
          "=", dec.id, dec.init
        ));
      } else if (includeIdentifiers) {
        exprs.push(dec.id);
      }
    });

    if (exprs.length === 0)
      return null;

    if (exprs.length === 1)
      return exprs[0];

    return t.sequenceExpression(exprs);
  }