protected _ourVersionChecker()

in src/SqlProviderBase.ts [128:150]

• 20 lines of code
• 5 McCabe index (conditional complexity)

    protected _ourVersionChecker(wipeIfExists: boolean): Promise<void> {
        return this._getDbVersion()
            .then(oldVersion => {
                if (oldVersion !== this._schema!!!.version) {
                    // Needs a schema upgrade/change
                    if (!wipeIfExists && this._schema!!!.version < oldVersion) {
                        console.log('Database version too new (' + oldVersion + ') for schema version (' + this._schema!!!.version +
                            '). Wiping!');
                        wipeIfExists = true;
                    }

                    return this._changeDbVersion(oldVersion, this._schema!!!.version).then(trans => {
                        return this._upgradeDb(trans, oldVersion, wipeIfExists);
                    });
                } else if (wipeIfExists) {
                    // No version change, but wipe anyway
                    return this.openTransaction(undefined, true).then(trans => {
                        return this._upgradeDb(trans, oldVersion, true);
                    });
                }
                return undefined;
            });
    }