Function constructor

packages/next/src/compiled/babel-packages/packages-bundle.js:316–318

(e,r)

                ${c} = ${this.addHelper(i)}(${l})
              )
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n=s.types.getBindingIdentifiers(e);const o=[];for(const e in n){o.push(s.types.assignmentExpression("=",getMemberExpression(r,e),s.types.cloneNode(n[e])))}return[e,s.types.expressionStatement(s.types.sequenceExpression(o))]}function buildNestedAmbientModuleError(e,r){return e.hub.buildError(r,"Ambient modules cannot be nested in other modules or namespaces.",Error)}function handleNested(e,r,t){const a=new Set;const o=r.id;const i=e.scope.generateUid(o.name);const l=r.body;let c=r.id;let d;{d=s.types.isTSModuleBlock(l)?l.body:[s.types.exportNamedDeclaration(l)]}let u=true;for(let r=0;r<d.length;r++){const t=d[r];switch(t.type){case"TSModuleDeclaration":{if(!s.types.isIdentifier(t.id)){throw buildNestedAmbientModuleError(e,t)}const n=handleNested(e,t);if(n!==null){u=false;const e=t.id.name;if(a.has(e)){d[r]=n}else{a.add(e);d.splice(r++,1,getDeclaration(e),n)}}continue}case"TSEnumDeclaration":case"FunctionDeclaration":case"ClassDeclaration":u=false;a.add(t.id.name);continue;case"VariableDeclaration":{u=false;for(const e in s.types.getBindingIdentifiers(t)){a.add(e)}continue}default:u&&(u=s.types.isTypeScript(t));continue;case"ExportNamedDeclaration":}if("declare"in t.declaration&&t.declaration.declare){continue}switch(t.declaration.type){case"TSEnumDeclaration":n.EXPORTED_CONST_ENUMS_IN_NAMESPACE.add(t.declaration);case"FunctionDeclaration":case"ClassDeclaration":{u=false;const e=t.declaration.id.name;a.add(e);d.splice(r++,1,t.declaration,s.types.expressionStatement(s.types.assignmentExpression("=",getMemberExpression(i,e),s.types.identifier(e))));break}case"VariableDeclaration":{u=false;const s=handleVariableDeclaration(t.declaration,i,e.hub);d.splice(r,s.length,...s);r+=s.length-1;break}case"TSModuleDeclaration":{if(!s.types.isIdentifier(t.declaration.id)){throw buildNestedAmbientModuleError(e,t.declaration)}const n=handleNested(e,t.declaration,s.types.identifier(i));if(n!==null){u=false;const e=t.declaration.id.name;if(a.has(e)){d[r]=n}else{a.add(e);d.splice(r++,1,getDeclaration(e),n)}}else{d.splice(r,1);r--}}}}if(u)return null;let p=s.types.objectExpression([]);if(t){const e=s.types.memberExpression(t,o);p=s.template.expression.ast`
      ${s.types.cloneNode(e)} ||
        (${s.types.cloneNode(e)} = ${p})
    `}return s.template.statement.ast`