revert: ignoreUnknown removal

src/type-flag.ts

@@ -40,6 +40,9 @@ const parsed = typeFlag({
 export function typeFlag<Schemas extends Flags>(
  schemas: Schemas,
  argv: string[] = process.argv.slice(2),
+ options: {
+ ignoreUnknown?: boolean;
+ } = {},
 ) {
  const aliasesMap = mapAliases(schemas);
  const parsed: TypeFlag<Schemas> = {
@@ -129,6 +132,8 @@ export function typeFlag<Schemas extends Flags>(
  hasAlias.schema,
  isLastAlias ? flagValue : true,
  );
+ } else if (options.ignoreUnknown) {
+ parsed._.push(argvElement);
  } else {
  setUnknown(alias, isLastAlias ? flagValue : true);
  }
@@ -148,7 +153,11 @@ export function typeFlag<Schemas extends Flags>(
  }
 
  if (!flagSchema) {
- setUnknown(flagName, flagValue);
+ if (options.ignoreUnknown) {
+ parsed._.push(argvElement);
+ } else {
+ setUnknown(flagName, flagValue);
+ }
  continue;
  }
 

tests/index.ts

@@ -336,6 +336,26 @@ describe('Parsing', ({ test }) => {
  );
  });
 
+ test('ignore unknown flags', () => {
+ const parsed = typeFlag(
+ {
+ string: [String],
+ },
+ ['--string', 'a', '--string=b', '--unknown', 'c', '--unknown=d', '-u'],
+ { ignoreUnknown: true },
+ );
+
+ expect(parsed).toStrictEqual({
+ flags: {
+ string: ['a', 'b'],
+ },
+ unknownFlags: {},
+ _: Object.assign(['--unknown', 'c', '--unknown=d', '-u'], {
+ '--': [],
+ }),
+ });
+ });
+
  test('custom type', () => {
  const ParseDate = (dateString: string) => new Date(dateString);