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JS/TS Snippets
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| Prints nested arrays as one string. Handy for Quokka.js | |
| ``` | |
| function printNestedArray(arr, depth = 0) { | |
| let result = '' | |
| const indent = ' '.repeat(depth)); | |
| if (Array.isArray(arr)) { | |
| result = result + `\n${indent}[` | |
| for (const item of arr) { | |
| result = result + indent + printNestedArray(item, depth + 1) | |
| } | |
| result = result + `\n${indent}]` | |
| } else { | |
| result = result + `\n${indent}${depth}: ${arr.value}` | |
| } | |
| return result; | |
| } | |
| ``` | |
| // safely handles circular references | |
| ``` | |
| const safeStringify = (obj, indent = 2) => { | |
| let cache = []; | |
| const retVal = JSON.stringify( | |
| obj, | |
| (key, value) => | |
| typeof value === 'object' && value !== null | |
| ? cache.includes(value) | |
| ? undefined // Duplicate reference found, discard key | |
| : cache.push(value) && value // Store value in our collection | |
| : value, | |
| indent | |
| ); | |
| cache = null; | |
| return retVal; | |
| }; | |
| ``` | |
| // Example: | |
| `console.log('options', safeStringify(options))` |
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