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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 | } |