chore(co2js): fix failing tests

co2js plugin reports the carbon operational value with a hilarious
number of decimal places. There are so many assumptions involved
that the error is must be quite high. Not sure how high, but restricting
to 3 decimal places max.

Also remove any type for the model.

Signed-off-by: alexzurbonsen <alexander.zur.bonsen@tngtech.com>

src/__tests__/unit/lib/co2js/index.test.ts

@@ -79,7 +79,7 @@ describe('lib/co2js: ', () => {
             duration: 3600,
             'network/data/bytes': 100000,
             'green-web-host': true,
-            'carbon-operational': 0.023195833333333332,
+            'carbon-operational': 0.023,
           },
         ]);
       });
@@ -131,7 +131,7 @@ describe('lib/co2js: ', () => {
             duration: 3600,
             'network/data': 10,
             'green-web-host': true,
-            'carbon-operational': 2319.583333333333,
+            'carbon-operational': 2319.583,
           },
         ]);
       });
@@ -157,7 +157,7 @@ describe('lib/co2js: ', () => {
             duration: 3600,
             'network/data/bytes': 100000,
             'green-web-host': false,
-            'carbon-operational': 0.029081299999999994,
+            'carbon-operational': 0.029,
           },
         ]);
       });
@@ -186,7 +186,7 @@ describe('lib/co2js: ', () => {
             duration: 3600,
             'network/data/bytes': 100000,
             'green-web-host': true,
-            'carbon-operational': 0.0254956723875,
+            'carbon-operational': 0.025,
           },
         ]);
       });
@@ -215,7 +215,7 @@ describe('lib/co2js: ', () => {
             duration: 3600,
             'network/data/bytes': 100000,
             'green-web-host': true,
-            'carbon-operational': 0.012103000000000001,
+            'carbon-operational': 0.012,
           },
         ]);
       });
@@ -246,7 +246,7 @@ describe('lib/co2js: ', () => {
             timestamp: '2021-01-01T00:00:00Z',
             duration: 3600,
             'network/data/bytes': 100000,
-            'carbon-operational': 0.037453104,
+            'carbon-operational': 0.037,
             'green-web-host': false,
             options: {
               dataReloadRatio: 0.6,

src/lib/co2js/index.ts

@@ -41,7 +41,7 @@ export const Co2js = PluginFactory({
       return result
         ? {
             ...input,
-            'carbon-operational': result,
+            'carbon-operational': roundToDecimalPlaces(result, 3),
           }
         : input;
     });
@@ -148,21 +148,21 @@ const Co2jsUtils = () => {
    */
   const calculateResultByParams = (
     inputWithConfig: PluginParams,
-    model: any,
+    model: co2,
   ) => {
     const greenhosting = inputWithConfig['green-web-host'] === true;
     const options = inputWithConfig['options'];
     const GBinBytes = inputWithConfig['network/data'] * 1000 * 1000 * 1000;
     const bytes = inputWithConfig['network/data/bytes'] || GBinBytes;
 
-    const paramType: {[key: string]: () => string} = {
+    const paramType: {[key: string]: () => number} = {
       swd: () => {
         return options
-          ? model.perVisitTrace(bytes, greenhosting, options).co2
-          : model.perVisit(bytes, greenhosting);
+          ? (model.perVisitTrace(bytes, greenhosting, options).co2 as number)
+          : (model.perVisit(bytes, greenhosting) as number);
       },
       '1byte': () => {
-        return model.perByte(bytes, greenhosting);
+        return model.perByte(bytes, greenhosting) as number;
       },
     };
 
@@ -175,3 +175,8 @@ const Co2jsUtils = () => {
     calculateResultByParams,
   };
 };
+
+const roundToDecimalPlaces = (num: number, decimalPlaces: number) => {
+  const factor = Math.pow(10, decimalPlaces);
+  return Math.round(num * factor) / factor;
+};