bylexus / fparse Goto Github PK

x + y < z
x > y
x >= z
x + y + z = 10
etc 

export class AppComponent {
  constructor(private router: ActivatedRoute) {
    const fObj = new Formula('2^x');
    let result = fObj.evaluate({ x: 3 }); // result = 8
    console.log(result);
  }
}

➜  playroutes git:(master) ✗ yarn start
yarn run v1.22.19
$ nx serve

> nx run playroutes:serve:development


Initial Chunk Files | Names         |  Raw Size
polyfills.js        | polyfills     |  82.71 kB | 
main.js             | main          |  34.11 kB | 
styles.css          | styles        |  95 bytes | 

                    | Initial Total | 116.92 kB

Application bundle generation complete. [1.507 seconds]
Watch mode enabled. Watching for file changes...

 >  NX   Failed to resolve entry for package "fparser". The package may have incorrect main/module/exports specified in its package.json.

   Pass --verbose to see the stacktrace.


 —————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————————

 >  NX   Running target serve for project playroutes failed

   Failed tasks:
   
   - playroutes:serve:development
   
   Hint: run the command with --verbose for more details.

   View structured, searchable error logs at https://nx.app/runs/KWq4lX62oE

error Command failed with exit code 1.
info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command.

fObj = new Formula('evaluate()');

const time = entry[i][0];
      const open = calculator.evaluate(paramsOpen);
      const high = calculator.evaluate(paramsHigh);
      const low = calculator.evaluate(paramsLow);
      const close = calculator.evaluate(paramsClose);

      kData.push([
        time,
        String(open),
        String(open >= close ? Math.max(high, open) : Math.max(high, close)),
        String(open >= close ? Math.min(low, close) : Math.min(low, open)),
        String(close),
        String(volume),
      ]);

 Argument of type 'number | number[]' is not assignable to parameter of type 'number'.

const close = formula.evaluate(params.close) as number;
const open = formula.evaluate(params.open) as number;
const high = formula.evaluate(params.high) as number;
const low = formula.evaluate(params.low) as number;
const volume = formula.evaluate(params.volume) as number;

var fObj = new Formula('if(eq(prop(1),prop(2)), "yes", "no")');
fObj.if=function(a,b,c) {...}
fObj.eq=function(a,b) {...}
fObj.prop=function(a) {...}

const squareMyVariable = new Formula('[My Variable]^2');
fObj.evaluate({"My Variable": 3}); // Throws: Uncaught Error: Cannot evaluate MyVariable: No value given