| 73 | |
| 74 | /** @internal */ |
| 75 | export function formatUnknown( |
| 76 | input: unknown, |
| 77 | options?: { |
| 78 | readonly space?: number | string | undefined |
| 79 | readonly ignoreToString?: boolean | undefined |
| 80 | } |
| 81 | ): string { |
| 82 | const space = options?.space ?? 0 |
| 83 | const seen = new WeakSet<object>() |
| 84 | const gap = !space ? "" : (Predicate.isNumber(space) ? " ".repeat(space) : space) |
| 85 | const ind = (d: number) => gap.repeat(d) |
| 86 | |
| 87 | const wrap = (v: unknown, body: string): string => { |
| 88 | const ctor = (v as any)?.constructor |
| 89 | return ctor && ctor !== Object.prototype.constructor && ctor.name ? `${ctor.name}(${body})` : body |
| 90 | } |
| 91 | |
| 92 | const ownKeys = (o: object): Array<PropertyKey> => { |
| 93 | try { |
| 94 | return Reflect.ownKeys(o) |
| 95 | } catch { |
| 96 | return ["[ownKeys threw]"] |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | function go(v: unknown, d = 0): string { |
| 101 | if (Array.isArray(v)) { |
| 102 | if (seen.has(v)) return CIRCULAR |
| 103 | seen.add(v) |
| 104 | if (!gap || v.length <= 1) return `[${v.map((x) => go(x, d)).join(",")}]` |
| 105 | const inner = v.map((x) => go(x, d + 1)).join(",\n" + ind(d + 1)) |
| 106 | return `[\n${ind(d + 1)}${inner}\n${ind(d)}]` |
| 107 | } |
| 108 | |
| 109 | if (Predicate.isDate(v)) return formatDate(v) |
| 110 | |
| 111 | if ( |
| 112 | !options?.ignoreToString && |
| 113 | Predicate.hasProperty(v, "toString") && |
| 114 | Predicate.isFunction(v["toString"]) && |
| 115 | v["toString"] !== Object.prototype.toString && |
| 116 | v["toString"] !== Array.prototype.toString |
| 117 | ) { |
| 118 | const s = safeToString(v) |
| 119 | if (v instanceof Error && v.cause) { |
| 120 | return `${s} (cause: ${go(v.cause, d)})` |
| 121 | } |
| 122 | return s |
| 123 | } |
| 124 | |
| 125 | if (Predicate.isString(v)) return JSON.stringify(v) |
| 126 | |
| 127 | if ( |
| 128 | Predicate.isNumber(v) || |
| 129 | v == null || |
| 130 | Predicate.isBoolean(v) || |
| 131 | Predicate.isSymbol(v) |
| 132 | ) return String(v) |