export class Fields { constructor({ fields = [], encoding = "utf-8" }) { this.entries = {}; fields.forEach(this.setField.bind(this)); this.encoding = encoding; } setField(field) { this.entries[field.name.toLowerCase()] = field; } getField(name) { return this.entries[name.toLowerCase()]; } removeField(name) { delete this.entries[name.toLowerCase()]; } getByType(kind) { return Object.values(this.entries).filter((field) => field.kind === kind); } }