trial_onnxruntime_web_1.ts

import * as ort from 'onnxruntime-web';

// use an async context to call onnxruntime functions.
async function main() {

    ort.InferenceSession
    const session = await ort.InferenceSession.create('./model4.onnx',   {
        executionProviders: ["wasm"],
      });

    // prepare feeds. use model input names as keys.
    const feeds = {
        float32_input: new ort.Tensor('float32', new Array<number>(221).fill(1), [1, 221]),
    };
    const model_outputs = await session.run(feeds);
    let probabilityAccept = Number(model_outputs['probabilities']['data'][1]);

    console.log(probabilityAccept);
}

main();

running the above snip is successful:

npx ts-node trial_onnxruntime_web_1.ts 
0.27018171548843384