58 lines
1.5 KiB
TypeScript
58 lines
1.5 KiB
TypeScript
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import { Wasm } from "../build/sqlite.js";
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import { getStr } from "./wasm.ts";
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import { Status } from "./constants.ts";
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/**
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* Errors which can occur while interacting with
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* a database.
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*/
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export class SqliteError extends Error {
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/**
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* Extension over the standard JS Error object
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* to also contain class members for error code
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* and error code name.
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*
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* Instances of this class should not be constructed
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* directly and should only be obtained
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* from exceptions raised in this module.
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*/
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constructor(context: Wasm | string, code?: Status) {
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let message;
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let status;
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if (typeof context === "string") {
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message = context;
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status = Status.Unknown;
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} else {
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message = getStr(context, context.get_sqlite_error_str());
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status = context.get_status();
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}
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super(message);
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this.code = code ?? status;
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this.name = "SqliteError";
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}
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/**
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* The SQLite status code which caused this error.
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*
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* Errors that originate in the JavaScript part of
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* the library will not have an associated status
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* code. For these errors, the code will be
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* `Status.Unknown`.
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*
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* These codes are accessible via
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* the exported `Status` object.
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*/
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code: Status;
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/**
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* Key of code in exported `status`
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* object.
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*
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* E.g. if `code` is `19`,
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* `codeName` would be `SqliteConstraint`.
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*/
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get codeName(): keyof typeof Status {
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return Status[this.code] as keyof typeof Status;
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}
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}
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