chore: ts import extensions

CLAUDE.md

@@ -115,7 +115,7 @@ See `docs/benchmark.md` for full documentation.
   `url_github_file`, `url_npm_package`, `url_logo`, `package_is_published`
   (consumed by fuz_ui's `Library` and by build-time tooling)
 - `result.ts` - Result type pattern
-- `error.ts` - error utilities (`UnreachableError`, `unreachable` assertion)
+- `error.ts` - error utilities (`UnreachableError`, `unreachable` assertion, `to_error_message` thrown-value → string)
 - `args.ts` - CLI argument parsing with Zod validation
 
 - `types.ts` - `Flavored` (loose nominal typing, no cast needed) and `Branded`
@@ -187,7 +187,7 @@ See `docs/benchmark.md` for full documentation.
 - explicit file extensions in imports
 - tab indentation, 100 character width
 - no re-exports - import directly from the source module (e.g., import baseline
-  functions from `benchmark_baseline.js`, not from `benchmark.js`)
+  functions from `benchmark_baseline.ts`, not from `benchmark.ts`)
 - no backwards compatibility preservation - breaking changes are acceptable
 
 ## Configuration

README.md

@@ -32,8 +32,8 @@ npm i -D @fuzdev/fuz_util
 Import modules at their full paths:
 
 ```ts
-import {type Result, unwrap} from '@fuzdev/fuz_util/result.js';
-import {random_int} from '@fuzdev/fuz_util/random.js';
+import {type Result, unwrap} from '@fuzdev/fuz_util/result.ts';
+import {random_int} from '@fuzdev/fuz_util/random.ts';
 ```
 
 `.ts` imports also work:

docs/benchmark.md

@@ -9,7 +9,7 @@ Comprehensive statistical analysis, percentile tracking, and rich output formatt
 ## Quick Start
 
 ```ts
-import {Benchmark} from '@fuzdev/fuz_util/benchmark.js';
+import {Benchmark} from '@fuzdev/fuz_util/benchmark.ts';
 
 const bench = new Benchmark({
 	duration_ms: 5000, // Run each task for 5 seconds
@@ -641,7 +641,7 @@ import {
 	stats_confidence_interval,
 	stats_outliers_iqr,
 	stats_outliers_mad,
-} from '@fuzdev/fuz_util/stats.js';
+} from '@fuzdev/fuz_util/stats.ts';
 
 // Calculate statistics on any numeric array
 const values = [1.2, 1.5, 1.3, 1.4, 1.6, 10.0]; // 10.0 is an outlier
@@ -765,7 +765,7 @@ function benchmark_stats_compare(
 Use `benchmark_stats_compare()` to determine if performance differences are statistically significant:
 
 ```ts
-import {benchmark_stats_compare} from '@fuzdev/fuz_util/benchmark_stats.js';
+import {benchmark_stats_compare} from '@fuzdev/fuz_util/benchmark_stats.ts';
 
 const results = await bench.run();
 const [result_a, result_b] = results;
@@ -805,13 +805,13 @@ interface BenchmarkComparison {
 Save benchmark results to disk and compare against baselines for CI/CD regression detection:
 
 ```ts
-import {Benchmark} from '@fuzdev/fuz_util/benchmark.js';
+import {Benchmark} from '@fuzdev/fuz_util/benchmark.ts';
 import {
 	benchmark_baseline_save,
 	benchmark_baseline_compare,
 	benchmark_baseline_format,
 	benchmark_baseline_format_json,
-} from '@fuzdev/fuz_util/benchmark_baseline.js';
+} from '@fuzdev/fuz_util/benchmark_baseline.ts';
 
 const bench = new Benchmark();
 bench.add('parse', () => parse(input));

package.json

@@ -81,7 +81,7 @@
     "@fuzdev/fuz_code": "^0.46.1",
     "@fuzdev/fuz_css": "^0.63.2",
     "@fuzdev/fuz_ui": "^0.205.1",
-    "@fuzdev/gro": "^0.204.0",
+    "@fuzdev/gro": "^0.205.1",
     "@fuzdev/mdz": "^0.1.0",
     "@ryanatkn/eslint-config": "^0.12.1",
     "@sveltejs/acorn-typescript": "^1.0.9",

src/app.d.ts

@@ -6,7 +6,7 @@ declare module 'virtual:fuz.css' {
 	export default css;
 }
 declare module 'virtual:pkg.json' {
-	import type {PkgJson} from '@fuzdev/fuz_util/pkg_json.js';
+	import type {PkgJson} from './lib/pkg_json.ts';
 	const pkg_json: PkgJson;
 	export default pkg_json;
 }

src/benchmarks/deep_equal.benchmark.ts

@@ -1,6 +1,6 @@
-import {Benchmark} from '$lib/benchmark.js';
-import {deep_equal} from '$lib/deep_equal.js';
-import type {BenchmarkGroup} from '$lib/benchmark_types.js';
+import {Benchmark} from '../lib/benchmark.ts';
+import {deep_equal} from '../lib/deep_equal.ts';
+import type {BenchmarkGroup} from '../lib/benchmark_types.ts';
 
 /* eslint-disable no-console, no-new-wrappers */
 

src/benchmarks/deep_equal_comparison.benchmark.ts

@@ -1,8 +1,8 @@
-import {Benchmark} from '$lib/benchmark.js';
+import {Benchmark} from '../lib/benchmark.ts';
 import {dequal} from 'dequal';
 import fastDeepEqual from 'fast-deep-equal';
 
-import {deep_equal} from '$lib/deep_equal.js';
+import {deep_equal} from '../lib/deep_equal.ts';
 
 /* eslint-disable no-console */
 

src/benchmarks/random.benchmark.ts

@@ -1,8 +1,8 @@
-import {Benchmark} from '$lib/benchmark.js';
-import {create_random_alea} from '$lib/random_alea.js';
-import {create_random_xoshiro} from '$lib/random_xoshiro.js';
+import {Benchmark} from '../lib/benchmark.ts';
+import {create_random_alea} from '../lib/random_alea.ts';
+import {create_random_xoshiro} from '../lib/random_xoshiro.ts';
 
-import {create_random_lcg, create_random_xorshift32} from '../test/random_test_helpers.js';
+import {create_random_lcg, create_random_xorshift32} from '../test/random_test_helpers.ts';
 
 /* eslint-disable no-console */
 

src/benchmarks/random_quality.ts

@@ -9,16 +9,16 @@
 
 /* eslint-disable no-console */
 
-import {create_random_alea} from '$lib/random_alea.js';
-import {create_random_xoshiro} from '$lib/random_xoshiro.js';
-import {stats_mean, stats_variance} from '$lib/stats.js';
-import {string_display_width, pad_width} from '$lib/string.js';
+import {create_random_alea} from '../lib/random_alea.ts';
+import {create_random_xoshiro} from '../lib/random_xoshiro.ts';
+import {stats_mean, stats_variance} from '../lib/stats.ts';
+import {string_display_width, pad_width} from '../lib/string.ts';
 
 import {
 	type Prng,
 	create_random_lcg,
 	create_random_xorshift32,
-} from '../test/random_test_helpers.js';
+} from '../test/random_test_helpers.ts';
 
 const deep = process.argv.includes('--deep');
 const N = deep ? 10_000_000 : 1_000_000;

src/benchmarks/run.ts

@@ -9,16 +9,16 @@
 /* eslint-disable no-console */
 
 import {readFile, writeFile} from 'node:fs/promises';
-import {format_file} from '@fuzdev/gro/format_file.js';
+import {format_file} from '@fuzdev/gro/format_file.ts';
 
-import {Benchmark} from '$lib/benchmark.js';
+import {Benchmark} from '../lib/benchmark.ts';
 import {
 	benchmark_baseline_save,
 	benchmark_baseline_compare,
 	benchmark_baseline_format,
-} from '$lib/benchmark_baseline.js';
-import {slugify} from '$lib/path.js';
-import {deep_equal} from '$lib/deep_equal.js';
+} from '../lib/benchmark_baseline.ts';
+import {slugify} from '../lib/path.ts';
+import {deep_equal} from '../lib/deep_equal.ts';
 
 const save_baseline = process.argv.includes('--save');
 const BASELINE_PATH = 'src/benchmarks';

src/benchmarks/slugify.benchmark.ts

@@ -1,5 +1,5 @@
-import {Benchmark} from '$lib/benchmark.js';
-import {slugify} from '$lib/path.js';
+import {Benchmark} from '../lib/benchmark.ts';
+import {slugify} from '../lib/path.ts';
 
 /* eslint-disable no-console */
 

src/lib/array.ts

@@ -1,4 +1,4 @@
-import type {ArrayElement} from './types.js';
+import type {ArrayElement} from './types.ts';
 
 // TODO try to cange to readonly again, see if upstream errors are tolerably fixed
 export const EMPTY_ARRAY: Array<any> = Object.freeze([]) as any;

src/lib/benchmark.ts

@@ -3,7 +3,7 @@
  *
  * @example
  * ```ts
- * import {Benchmark} from '@fuzdev/fuz_util/benchmark.js';
+ * import {Benchmark} from '@fuzdev/fuz_util/benchmark.ts';
  *
  * const bench = new Benchmark({
  *   duration_ms: 5000,
@@ -21,9 +21,9 @@
  * @module
  */
 
-import {is_promise, wait} from './async.js';
-import {BenchmarkStats} from './benchmark_stats.js';
-import {timer_default, time_unit_detect_best, time_format} from './time.js';
+import {is_promise, wait} from './async.ts';
+import {BenchmarkStats} from './benchmark_stats.ts';
+import {timer_default, time_unit_detect_best, time_format} from './time.ts';
 import {
 	benchmark_format_table,
 	benchmark_format_table_grouped,
@@ -32,13 +32,13 @@ import {
 	benchmark_format_json,
 	benchmark_format_number,
 	type BenchmarkFormatJsonOptions,
-} from './benchmark_format.js';
+} from './benchmark_format.ts';
 import type {
 	BenchmarkConfig,
 	BenchmarkTask,
 	BenchmarkResult,
 	BenchmarkFormatTableOptions,
-} from './benchmark_types.js';
+} from './benchmark_types.ts';
 
 // Default configuration values
 const DEFAULT_DURATION_MS = 1000;

src/lib/benchmark_baseline.ts

@@ -9,15 +9,15 @@ import {readFile, writeFile, mkdir, rm} from 'node:fs/promises';
 import {join} from 'node:path';
 import {z} from 'zod';
 
-import {fs_exists} from './fs.js';
-import {git_info_get} from './git.js';
-import type {BenchmarkResult} from './benchmark_types.js';
+import {fs_exists} from './fs.ts';
+import {git_info_get} from './git.ts';
+import type {BenchmarkResult} from './benchmark_types.ts';
 import {
 	benchmark_stats_compare,
 	type BenchmarkComparison,
 	type BenchmarkStatsComparable,
-} from './benchmark_stats.js';
-import {stats_confidence_interval_from_summary, stats_cv} from './stats.js';
+} from './benchmark_stats.ts';
+import {stats_confidence_interval_from_summary, stats_cv} from './stats.ts';
 
 // Version for forward compatibility - increment when schema changes
 const BASELINE_VERSION = 3;

src/lib/benchmark_format.ts

@@ -1,7 +1,7 @@
-import type {BenchmarkResult, BenchmarkGroup} from './benchmark_types.js';
-import {time_unit_detect_best, time_format, TIME_UNIT_DISPLAY} from './time.js';
-import {string_display_width, pad_width} from './string.js';
-import {format_number} from './maths.js';
+import type {BenchmarkResult, BenchmarkGroup} from './benchmark_types.ts';
+import {time_unit_detect_best, time_format, TIME_UNIT_DISPLAY} from './time.ts';
+import {string_display_width, pad_width} from './string.ts';
+import {format_number} from './maths.ts';
 
 /**
  * Format results as an ASCII table with percentiles, min/max, and relative performance.

src/lib/benchmark_stats.ts

@@ -6,7 +6,7 @@
  * @module
  */
 
-import {TIME_NS_PER_SEC, time_format_adaptive} from './time.js';
+import {TIME_NS_PER_SEC, time_format_adaptive} from './time.ts';
 import {
 	stats_mean,
 	stats_median,
@@ -18,7 +18,7 @@ import {
 	stats_outliers_mad,
 	stats_welch_t_test,
 	stats_t_distribution_p_value,
-} from './stats.js';
+} from './stats.ts';
 
 /**
  * Minimal stats interface for comparison.

src/lib/benchmark_types.ts

@@ -1,5 +1,5 @@
-import type {BenchmarkStats} from './benchmark_stats.js';
-import type {Timer} from './time.js';
+import type {BenchmarkStats} from './benchmark_stats.ts';
+import type {Timer} from './time.ts';
 
 /**
  * Configuration options for a benchmark suite.

src/lib/colors.ts

@@ -1,5 +1,5 @@
-import type {Flavored} from './types.js';
-import {round} from './maths.js';
+import type {Flavored} from './types.ts';
+import {round} from './maths.ts';
 
 // TODO for high-performance usecases, we may want to add variants for any that return a new array to reuse a single array
 // I've run into cases where this is a massive perceptible UX difference

src/lib/dag.ts

@@ -9,8 +9,8 @@
  * @module
  */
 
-import {AsyncSemaphore, create_deferred, type Deferred} from './async.js';
-import {topological_sort, type Sortable} from './sort.js';
+import {AsyncSemaphore, create_deferred, type Deferred} from './async.ts';
+import {topological_sort, type Sortable} from './sort.ts';
 
 /**
  * Minimum shape for a DAG node.

src/lib/diff.ts

@@ -4,7 +4,7 @@
  * @module
  */
 
-import {string_is_binary} from './string.js';
+import {string_is_binary} from './string.ts';
 
 /** Line diff result */
 export interface DiffLine {

src/lib/fact_hash.ts

@@ -22,9 +22,9 @@
 import {hash_stream} from '@fuzdev/blake3_wasm';
 import {z} from 'zod';
 
-import {hash_blake3} from './hash_blake3.js';
-import {to_hex} from './hex.js';
-import type {Json} from './json.js';
+import {hash_blake3} from './hash_blake3.ts';
+import {to_hex} from './hex.ts';
+import type {Json} from './json.ts';
 
 /** Algorithm prefix on every fact hash. The colon is the separator. */
 export const FACT_HASH_PREFIX = 'blake3:';

src/lib/fact_store.ts

@@ -13,7 +13,7 @@
  * @module
  */
 
-import type {FactHash} from './fact_hash.js';
+import type {FactHash} from './fact_hash.ts';
 
 /**
  * Optional metadata + ref declarations on a `put` / `put_ref` call.

src/lib/fetch.ts

@@ -1,10 +1,10 @@
 import {z} from 'zod';
 
-import type {Flavored} from './types.js';
-import type {Logger} from './log.js';
-import {EMPTY_OBJECT} from './object.js';
-import type {Result} from './result.js';
-import {json_stringify_deterministic} from './json.js';
+import type {Flavored} from './types.ts';
+import type {Logger} from './log.ts';
+import {EMPTY_OBJECT} from './object.ts';
+import type {Result} from './result.ts';
+import {json_stringify_deterministic} from './json.ts';
 
 const DEFAULT_GITHUB_API_ACCEPT_HEADER = 'application/vnd.github+json';
 const DEFAULT_GITHUB_API_VERSION_HEADER = '2022-11-28';