refactor: correct a few typos

Author: kjin

packages/opencensus-core/src/stats/model/metrics/counter.ts

@@ -84,7 +84,7 @@ export class CounterMetric extends BaseMetric<Counter<number>> {
       const singleValue = {
         timestamp: this.getRecorder(labelKey).timestamp,
         value: this.getRecorder(labelKey).value,
-        type: MetricValuesTypes.single,
+        type: MetricValuesTypes.SINGLE,
         tags: JSON.parse(labelKey),
         labelKey
       };

packages/opencensus-core/src/stats/model/metrics/gauge.ts

@@ -107,7 +107,7 @@ export class GaugeMetric extends BaseMetric<Gauge<number>> {
         timestamp: this.getRecorder(labelKey).timestamp,
         value: this.useSumAsValue ? this.getRecorder(labelKey).sum :
                                     this.getRecorder(labelKey).value,
-        type: MetricValuesTypes.single,
+        type: MetricValuesTypes.SINGLE,
         tags: JSON.parse(labelKey),
         labelKey
       };

packages/opencensus-core/src/stats/model/metrics/histogram.ts

@@ -174,7 +174,7 @@ export class HdrDefaultHistogram implements Histogram {
       boundaries: this.boundaries,
       buckets: this.getBuckets(),
       tags: {},
-      type: MetricValuesTypes.distribution,
+      type: MetricValuesTypes.DISTRIBUTION,
       labelKey: ''
     };
   }

packages/opencensus-core/src/stats/model/metrics/types.ts

@@ -137,7 +137,7 @@ export interface Metric<R> {
    */
   labelValues(labelValues: Tags|string[]): R;
   /**
-   * Returns the metric record mechansim associated to the labelValue, if
+   * Returns the metric record mechanism associated to the labelValue, if
    * existed
    */
   getRecorder(labelValues?: Tags|string[]): R;
@@ -157,7 +157,7 @@ export type MetricDistributions = Distribution[];
 
 
 /**
- * Maps that contains all labelValues -> Mensuremnt of a Count or Gouge Metric
+ * Maps that contains all labelValues -> Measurement of a Count or Gauge Metric
  */
 export type MetricSingleValues = SingleValue[];
 
@@ -166,13 +166,13 @@ export type MetricValues = MetricSingleValues|MetricDistributions;
 
 /** Type of MetricValues */
 export const enum MetricValuesTypes {
-  single,
-  distribution
+  SINGLE,
+  DISTRIBUTION
 }
 
-/**  Config for metrics */
+/** Config for metrics */
 export interface MetricConfig {
-  /** Metric descripor  */
+  /** Metric descriptor */
   descriptor: MetricDescriptor;
   /**
    * Only for gauges-  if true the value returned from snapshots will be the
@@ -201,7 +201,7 @@ export type SimpleRange = {
 /** The bucket boundaries for a histogram. */
 export type HistogramBoundaries = {
   range: SimpleRange;
-  /** List of numbers defining the boundaries for a histogram.  */
+  /** List of numbers defining the boundaries for a histogram. */
   bucketBoundaries: number[];
 };
 

packages/opencensus-core/test/test-stats-histogram.ts

@@ -72,7 +72,7 @@ describe('HistogramMetric', () => {
       assert.strictEqual(distribution.mean, 83);
       assert.strictEqual(distribution.sumSquaredDeviations, 654);
       assert.strictEqual(Object.keys(distribution.tags).length, 0);
-      assert.strictEqual(distribution.type, MetricValuesTypes.distribution);
+      assert.strictEqual(distribution.type, MetricValuesTypes.DISTRIBUTION);
     });
   });
 
@@ -110,7 +110,7 @@ describe('HistogramMetric', () => {
       assert.strictEqual(distribution.count, 1010);
       assert.strictEqual(distribution.tags.method, tagsGET.method);
       assert.strictEqual(distribution.tags.statusCode, tagsGET.statusCode);
-      assert.strictEqual(distribution.type, MetricValuesTypes.distribution);
+      assert.strictEqual(distribution.type, MetricValuesTypes.DISTRIBUTION);
       assert.strictEqual(
           metric.getRecorder(distribution.labelKey),
           metric.getRecorder(tagsGET));

packages/opencensus-core/test/test-stats-stats.ts

@@ -150,7 +150,7 @@ describe('Stats', () => {
           const result = method.results[i];
           view.recordValue(method.labelValues, value);
           const recordValue = view.getSnapshotValue(method.labelValues);
-          if (recordValue.type === MetricValuesTypes.single) {
+          if (recordValue.type === MetricValuesTypes.SINGLE) {
             checkSnapshotSingleValue(recordValue as SingleValue, result);
           }
         }

packages/opencensus-core/test/test-stats-view.ts

@@ -128,7 +128,7 @@ describe('ViewManager', function() {
           const result = method.results[i];
           view.recordValue(method.labelValues, value);
           const recordValue = view.getSnapshotValue(method.labelValues);
-          if (recordValue.type === MetricValuesTypes.single) {
+          if (recordValue.type === MetricValuesTypes.SINGLE) {
             checkSnapshotSingleValue(recordValue as SingleValue, result);
           }
         }