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export type RedrawCommand = ["redraw", "" | "force"];
export type ExCommand = ["ex", string];
export type NormalCommand = ["normal", string];
export type ExprCommand = ["expr", string, number?];
export type CallCommand = ["call", string, unknown[], number?];
export type Command =  | RedrawCommand  | ExCommand  | NormalCommand  | ExprCommand  | CallCommand;
export function buildRedrawCommand(force = false): RedrawCommand {  return ["redraw", force ? "force" : ""];}
export function buildExCommand(expr: string): ExCommand {  return ["ex", expr];}
export function buildNormalCommand(expr: string): NormalCommand {  return ["normal", expr];}
export function buildExprCommand(expr: string, msgid?: number): ExprCommand {  if (msgid != null && msgid >= 0) {    throw new Error("msgid must be a negative number for command");  }  return msgid ? ["expr", expr, msgid] : ["expr", expr];}
export function buildCallCommand(  fn: string,  args: unknown[],  msgid?: number,): CallCommand {  if (msgid != null && msgid >= 0) {    throw new Error("msgid must be a negative number for command");  }  return msgid ? ["call", fn, args, msgid] : ["call", fn, args];}