Files
ng-eventually/examples/notebook/README.md
Sylvain Duchesne 737729c9ce refactor: le paquet s'appelle polyfill, « SDK » désigne celui de NextGraph
Le nom @ng-eventually/sdk entrait en collision avec le SDK de NextGraph, dont
ce paquet est justement un polyfill. Impossible d'écrire « le SDK » sans lever
l'ambiguïté à chaque phrase — et le contrat publié, lu par une application,
était le pire endroit pour laisser traîner ça.

packages/sdk → packages/polyfill, @ng-eventually/sdk → @ng-eventually/polyfill,
contract_sdk-surface → contract_polyfill-surface, e2e/sdk-entry.ts →
e2e/polyfill-entry.ts, docs/sdk-reference.md → docs/polyfill-reference.md.

Les occurrences de « SDK » qui désignent celui de NextGraph restent intactes,
y compris les chemins dans nextgraph-rs (sdk/js/orm, sdk/js/web). Le tri s'est
fait occurrence par occurrence, pas par substitution.

Le contrat énonce désormais son identité en une phrase : « This package is a
polyfill of NextGraph's SDK. »
2026-08-10 17:14:25 +02:00

3.1 KiB

Notebook — the library's example application

A minimal application written against @ng-eventually/polyfill, in plain DOM.

It exists for two reasons, and the second is the one that matters.

It shows how to use the library. Every call in app.ts is what a real consumer writes. There is no test scaffolding, no privileged import, no reaching into the library's internals — it resolves @ng-eventually/polyfill as an external consumer does. If something reads awkwardly here, it reads awkwardly for everyone.

It is what the applicative e2e suite drives (packages/polyfill/e2e/notebook.ts, bun run test:e2e:app). The other suite talks to a bag of methods on window.__sdk, which proves the functions run but never that an application can be written with them — and that gap shipped a real defect once: a document's inbox was green in tests and unusable in practice, because the harness handed an address across an identity boundary through a variable, something no application can do. Here each identity is its own browser page, and the only values that cross between them are the ones that cross in life: a note's reference, copied off one screen, and an identifier typed into a field.

It has already paid for itself: writing it surfaced that UnionSubject returned string where the values are always document references (so a consumer had to cast whatever it had just read before passing it back), and that the access gate normalized what a user typed but not what the URL carried.

What it exercises

Signing in, writing notes by scope, listing one's own, reading a note from its bare reference, handing a reader the key to a protected note, opening a note for messages, leaving a message on someone else's note, and reacting to changes.

The four journeys the suite runs, and what each proves:

Journey What it proves
Bob reads Alice's PUBLIC note from its reference alone A public store serves its notes' keys — a bare reference is enough, and no key ever crosses
Alice's PROTECTED note stays shut until she shares it The same gesture, the opposite outcome, decided by where the note sits and not by what was sent
Bob leaves a message on Alice's note, and only Alice reads it A depositor FINDS the address from the note itself; depositing grants no reading
Each actor's list holds their own notes The boundary, seen from the only place that matters: the screen

It has also found three defects of its own, each one the harness could not see. The first turned out to be a LIBRARY defect rather than an application one: the connection work had to be awaited at sign-in, or a note just shared with you read as unreadable — so ensureIdentity now awaits it, and connectedUser left the published surface. The other two were the application's: a stale answer stayed on screen beside a fresh question, and changing the scope did not refresh the list.

Running it

cd packages/polyfill && bun run test:e2e:app builds it, serves it, and drives it against the real broker. To open it by hand you need a wallet: serve the folder with a bundled app.js and a /shared-wallet.ngw, and set __NOTEBOOK_WALLET_PASSWORD__.