ceph/src/arrow/js/src/util/pretty.ts

   1 // Licensed to the Apache Software Foundation (ASF) under one
   2 // or more contributor license agreements.  See the NOTICE file
   3 // distributed with this work for additional information
   4 // regarding copyright ownership.  The ASF licenses this file
   5 // to you under the Apache License, Version 2.0 (the
   6 // "License"); you may not use this file except in compliance
   7 // with the License.  You may obtain a copy of the License at
   8 //
   9 //   http://www.apache.org/licenses/LICENSE-2.0
  10 //
  11 // Unless required by applicable law or agreed to in writing,
  12 // software distributed under the License is distributed on an
  13 // "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  14 // KIND, either express or implied.  See the License for the
  15 // specific language governing permissions and limitations
  16 // under the License.
  17
  18 /** @ignore */ const undf = void (0);
  19
  20 /** @ignore */
  21 export function valueToString(x: any) {
  22     if (x === null) { return 'null'; }
  23     if (x === undf) { return 'undefined'; }
  24     switch (typeof x) {
  25         case 'number': return `${x}`;
  26         case 'bigint': return `${x}`;
  27         case 'string': return `"${x}"`;
  28     }
  29     // If [Symbol.toPrimitive] is implemented (like in BN)
  30     // use it instead of JSON.stringify(). This ensures we
  31     // print BigInts, Decimals, and Binary in their native
  32     // representation
  33     if (typeof x[Symbol.toPrimitive] === 'function') {
  34         return x[Symbol.toPrimitive]('string');
  35     }
  36     return ArrayBuffer.isView(x) ? `[${x}]` : JSON.stringify(x);
  37 }