nl_tokens: Get require expression module id
pl_tokens: function getRequireExpressionModuleId ( node , t ) { if ( t . isCallExpression ( node ) ) { let { arguments : args , callee } = node ; if ( t . isIdentifier ( callee ) && callee . <mask> === 'require' && args . length === 1 && t . isLiteral ( args [ 0 ] ) ) { let id = args [ 0 ] . value ; return id ; } } }