23995741899

Committed 05 Apr 2026 06:14AM UTC coverage: 77.093% (+0.002%) from 77.091%

Build # 23995741899

Build Type

push

github

Committed by

web-flow

Commit Message

Upgrade to TypeScript 6 and Prettier improvements (#1936)

* Upgrade TypeScript to v6

* Fix import source

* Fix tsconfig

* Fix preexisting type errors

* Remove scm-slang

* Bump node types

* Fix tsconfig

* Fix node types specifier

* Enable trailing commas

* Enable semicolons

* Check and commit files with changed line numbers

* Update Yarn to 4.13.0

* Remove unneeded sicp package deps

Coverage Stats

3112 of 4282 branches covered (72.68%)

Branch coverage included in aggregate %.

3761 of 5218 new or added lines in 152 files covered. (72.08%)

26 existing lines in 9 files now uncovered.

7136 of 9011 relevant lines covered (79.19%)

175254.05 hits per line

Source File
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62.5

/src/stdlib/stream.ts

import { head, is_null, type List, type Pair, pair, tail } from './list';

export type Stream<T = unknown> = null | Pair<T, () => Stream<T>>;

/**
 * Makes a Stream out of its arguments\
 * LOW-LEVEL FUNCTION, NOT SOURCE
 */
export function stream<T>(...elements: T[]): Stream<T> {
  if (elements.length === 0) return null;

  const [item, ...rest] = elements;
  return pair(item, () => stream(...rest));
}

// same as list_to_stream in stream.prelude.ts
export function list_to_stream<T>(xs: List<T>): Stream<T> {
  return is_null(xs) ? null : pair(head(xs), () => list_to_stream(tail(xs)));
}

1	import { head, is_null, type List, type Pair, pair, tail } from './list';
2
3	export type Stream<T = unknown> = null \| Pair<T, () => Stream<T>>;
4
5	/**
6	* Makes a Stream out of its arguments\
7	* LOW-LEVEL FUNCTION, NOT SOURCE
8	*/
9	export function stream<T>(...elements: T[]): Stream<T> {
10	if (elements.length === 0) return null;	115✔
11
12	const [item, ...rest] = elements;	100✔
13	return pair(item, () => stream(...rest));	100✔
14	}
15
16	// same as list_to_stream in stream.prelude.ts
17	export function list_to_stream<T>(xs: List<T>): Stream<T> {
NEW 18	return is_null(xs) ? null : pair(head(xs), () => list_to_stream(tail(xs)));	×
19	}

source-academy / js-slang / 23995741899

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