message: chore(test): fix bufferTime types
diff: @@ -18,7 +18,7 @@ describe('bufferTime operator', () => {
  w: ['a', 'b'],
  x: ['c', 'd', 'e'],
  y: ['f', 'g'],
  - z: []
  + z: [] as string[]
  };
  const result = e1.pipe(bufferTime(t, null, Number.POSITIVE_INFINITY, rxTestScheduler));
  @@ -34,7 +34,7 @@ describe('bufferTime operator', () => {
  const values = {
  x: ['a', 'b', 'c'],
  y: ['d', 'e', 'g'],
  - z: []
  + z: [] as string[]
  };
  const result = e1.pipe(bufferTime(t, null, Number.POSITIVE_INFINITY, rxTestScheduler));
  @@ -69,7 +69,7 @@ describe('bufferTime operator', () => {
  w: ['a', 'b'],
  x: ['c', 'd', 'e'],
  y: ['f', 'g'],
  - z: []
  + z: [] as string[]
  };
  const result = e1.pipe(bufferTime(t, null, 3, rxTestScheduler));
  @@ -137,8 +137,8 @@ describe('bufferTime operator', () => {
  b: ['4', '5', '6'],
  c: ['6', '7', '8'],
  d: ['8', '9'],
  - e: [],
  - f: []
  + e: [] as string[],
  + f: [] as string[]
  };
  const result = e1.pipe(bufferTime(t, interval, Number.POSITIVE_INFINITY, rxTestScheduler));
  @@ -164,7 +164,7 @@ describe('bufferTime operator', () => {
  b: ['4', '5', '6'],
  c: ['6', '7', '8'],
  d: ['8', '9'],
  - e: []
  + e: [] as string[]
  };
  const result = e1.pipe(bufferTime(t, interval, Number.POSITIVE_INFINITY, rxTestScheduler));
  @@ -222,7 +222,7 @@ describe('bufferTime operator', () => {
  const e1 = cold( '|');
  const e1subs = '(^!)';
  const expected = '(b|)';
  - const values = { b: [] };
  + const values = { b: [] as string[] };
  const t = time('----------|');
  const result = e1.pipe(bufferTime(t, null, Number.POSITIVE_INFINITY, rxTestScheduler));
  