Mark all inputs as readonly

src/index.ts

@@ -12,13 +12,10 @@ export type RawValue = Value | Sql;
  * A SQL instance can be nested within each other to build SQL strings.
  */
 export class Sql {
- values: Value[];
- strings: string[];
+ readonly values: Value[];
+ readonly strings: string[];
 
- constructor(
- rawStrings: ReadonlyArray<string>,
- rawValues: ReadonlyArray<RawValue>
- ) {
+ constructor(rawStrings: readonly string[], rawValues: readonly RawValue[]) {
  if (rawStrings.length - 1 !== rawValues.length) {
  if (rawStrings.length === 0) {
  throw new TypeError("Expected at least 1 string");
@@ -96,7 +93,7 @@ export class Sql {
  * Create a SQL query for a list of values.
  */
 export function join(
- values: RawValue[],
+ values: readonly RawValue[],
  separator = ",",
  prefix = "",
  suffix = ""
@@ -129,8 +126,8 @@ export const empty = raw("");
  * Create a SQL object from a template string.
  */
 export default function sql(
- strings: ReadonlyArray<string>,
- ...values: RawValue[]
+ strings: readonly string[],
+ ...values: readonly RawValue[]
 ) {
  return new Sql(strings, values);
 }