File size: 2,134 Bytes
3e05655 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 | import { Schema } from "effect"
export abstract class NamedError extends Error {
abstract schema(): Schema.Top
abstract toObject(): { name: string; data: unknown }
static hasName(error: unknown, name: string): boolean {
return (
typeof error === "object" && error !== null && "name" in error && (error as Record<string, unknown>).name === name
)
}
static create<Name extends string, Fields extends Schema.Struct.Fields>(
name: Name,
fields: Fields,
): ReturnType<typeof NamedError.createSchemaClass<Name, Schema.Struct<Fields>>>
static create<Name extends string, DataSchema extends Schema.Top>(
name: Name,
data: DataSchema,
): ReturnType<typeof NamedError.createSchemaClass<Name, DataSchema>>
static create<Name extends string>(name: Name, data: Schema.Top | Schema.Struct.Fields) {
return NamedError.createSchemaClass(name, Schema.isSchema(data) ? data : Schema.Struct(data))
}
private static createSchemaClass<Name extends string, DataSchema extends Schema.Top>(name: Name, data: DataSchema) {
const schema = Schema.Struct({
name: Schema.Literal(name),
data,
}).annotate({ identifier: name })
type Data = Schema.Schema.Type<DataSchema>
const result = class extends NamedError {
public static readonly Schema = schema
public static readonly EffectSchema = schema
public static readonly tag = name
public override readonly name = name
constructor(
public readonly data: Data,
options?: ErrorOptions,
) {
super(name, options)
this.name = name
}
static isInstance(input: unknown): input is InstanceType<typeof result> {
return NamedError.hasName(input, name)
}
schema() {
return schema
}
toObject() {
return {
name: name,
data: this.data,
}
}
}
Object.defineProperty(result, "name", { value: name })
return result
}
public static readonly Unknown = NamedError.create("UnknownError", {
message: Schema.String,
ref: Schema.optional(Schema.String),
})
}
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