I'm working with node and sqlite, trying to connect asynchronously to the db with the sqlite-async node module(https://github.com/fhellwig/sqlite-async/blob/master/sqlite-async.js).
I have the following functions:
const Database = require('sqlite-async'); async function asyncdb() { const dba = new Database; return await dba.open('./test.db').then(() => console.log('async db opened') ) .catch(err => { console.log('async db failed'); })
}
and:
async function select_from_table(dba,tablename, limit) { let arr = []; let sql = `SELECT Id FROM ${tablename} WHERE Type='Real' LIMIT ${limit}`; return await dba.run(sql); }
When I run them as in the screenshot:
$ node sqlite.js (node:12943) UnhandledPromiseRejectionWarning: TypeError: dba.run is not a function at select_from_table (/home/optionhomes11/nodeprojects/hayes/sqlite.js:113:20) at Object.<anonymous> (/home/optionhomes11/nodeprojects/hayes/sqlite.js:141:1) at Module._compile (internal/modules/cjs/loader.js:999:30) at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10) at Module.load (internal/modules/cjs/loader.js:863:32) at Function.Module._load (internal/modules/cjs/loader.js:708:14) at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12) at internal/main/run_main_module.js:17:47 (node:12943) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see
How can I fix this?
edit:
changing code to:
const dba = asyncdb(); console.log('out',dba);
gives:
out Promise { <pending> } async db opened
edit2:
Thank you, but I'm getting syntax errors that say
console.log('async db opened'); ^
SyntaxError: missing ) after argument list
with your version of the function. Also I tried await and it would not allow it there saying it had to be in async function
https://stackoverflow.com/questions/65535409/unhandledpromiserejectionwarning-typeerror-dba-run-is-not-a-function January 02, 2021 at 09:59AM
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