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Always init

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Andras Schmelczer 2025-07-07 22:30:33 +01:00
parent c38b7c9972
commit 70ef5cc0de
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4 changed files with 20 additions and 59 deletions
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28
reconcile-js/src/index.test.ts
View file

@ -1,24 +1,11 @@
import { init, reconcile, reconcileWithHistory } from './index';
import * as fs from 'fs';
import { reconcile, reconcileWithHistory } from './index';
describe('reconcile', () => {
it('tries calling functions without init', () => {
expect(() => reconcile('Hello', 'Hello world', 'Hi world')).toThrow(/call init()/);
expect(() => reconcileWithHistory('Hello', 'Hello world', 'Hi world')).toThrow(
/call init()/
);
});
it('call reconcile without cursors', async () => {
await initWasm();
it('call reconcile without cursors', () => {
expect(reconcile('Hello', 'Hello world', 'Hi world').text).toEqual('Hi world');
});
it('call reconcile with cursors', async () => {
await initWasm();
it('call reconcile with cursors', () => {
const result = reconcile(
'Hello',
{
@ -50,17 +37,10 @@ describe('reconcile', () => {
]);
});
it('call reconcileWithHistory', async () => {
await initWasm();
it('call reconcileWithHistory', () => {
const result = reconcileWithHistory('Hello', 'Hello world', 'Hi world');
expect(result.text).toEqual('Hi world');
expect(result.history.length).toBeGreaterThan(0);
});
});
async function initWasm() {
const wasmBin = fs.readFileSync('../pkg/reconcile_bg.wasm');
await init({ module_or_path: wasmBin });
}

44
reconcile-js/src/index.ts
View file

@ -6,9 +6,11 @@ import wasmInit, {
BuiltinTokenizer,
reconcileWithHistory as wasmReconcileWithHistory,
History,
InitInput,
initSync,
} from 'reconcile';
import wasm from 'reconcile/reconcile_bg.wasm';
export interface TextWithCursors {
/** The document's entire content */
text: string;
@ -44,32 +46,10 @@ const TOKENIZERS = ['Line', 'Word', 'Character'];
let isInitialised = false;
const UNINITIALISED_MODULE_ERROR =
'Reconcile module has not been initialized. Please call init() before using any other functions.';
const UNSUPPORTED_TOKENIZER_ERROR = `Unsupported tokenizer. Only ${TOKENIZERS.join(
', '
)} are supported.`;
/**
* Initializes the WASM module for text reconciliation.
* Must be called before using any other functions.
*
* The function is idempotent.
*
* @param content - Optional initialization input for the WASM module during testing.
* @returns Promise that resolves when initialization is complete
*/
export async function init(content?: InitInput) {
if (isInitialised) {
return;
}
await wasmInit(content);
isInitialised = true;
}
/**
* Merges three versions of text (original, left, right) and cursor positions.
*
@ -85,9 +65,7 @@ export function reconcile(
right: string | TextWithCursors,
tokenizer: BuiltinTokenizer = 'Word'
): TextWithCursors {
if (!isInitialised) {
throw new Error(UNINITIALISED_MODULE_ERROR);
}
init();
if (!TOKENIZERS.includes(tokenizer)) {
throw new Error(UNSUPPORTED_TOKENIZER_ERROR);
@ -124,9 +102,7 @@ export function reconcileWithHistory(
right: string | TextWithCursors,
tokenizer: BuiltinTokenizer = 'Word'
): TextWithCursorsAndHistory {
if (!isInitialised) {
throw new Error(UNINITIALISED_MODULE_ERROR);
}
init();
if (!TOKENIZERS.includes(tokenizer)) {
throw new Error(UNSUPPORTED_TOKENIZER_ERROR);
@ -150,6 +126,16 @@ export function reconcileWithHistory(
};
}
function init() {
if (isInitialised) {
return;
}
initSync({ module: (wasm as any).default });
isInitialised = true;
}
function toWasmTextWithCursors(text: string | TextWithCursors): wasmTextWithCursors {
const isInputString = typeof text == 'string';
const leftText = isInputString ? text : text.text;