chore: Fix lint warnings in core package

packages/opentelemetry-core/src/baggage/propagation/HttpBaggagePropagator.ts

@@ -43,7 +43,7 @@ import {
  * https://w3c.github.io/baggage/
  */
 export class HttpBaggagePropagator implements TextMapPropagator {
-  inject(context: Context, carrier: unknown, setter: TextMapSetter) {
+  inject(context: Context, carrier: unknown, setter: TextMapSetter): void {
     const baggage = propagation.getBaggage(context);
     if (!baggage || isTracingSuppressed(context)) return;
     const keyPairs = getKeyPairs(baggage)

packages/opentelemetry-core/src/baggage/utils.ts

@@ -13,33 +13,34 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-import { Baggage, baggageEntryMetadataFromString } from '@opentelemetry/api';
+import { Baggage, BaggageEntryMetadata, baggageEntryMetadataFromString } from '@opentelemetry/api';
 import {
   BAGGAGE_ITEMS_SEPARATOR,
   BAGGAGE_PROPERTIES_SEPARATOR,
   BAGGAGE_KEY_PAIR_SEPARATOR,
   BAGGAGE_MAX_TOTAL_LENGTH,
 } from './constants';
 
-export const serializeKeyPairs = (keyPairs: string[]) => {
+type ParsedBaggageKeyValue = { key: string, value: string, metadata: BaggageEntryMetadata | undefined };
+
+export function serializeKeyPairs(keyPairs: string[]): string {
   return keyPairs.reduce((hValue: string, current: string) => {
-    const value = `${hValue}${
-      hValue !== '' ? BAGGAGE_ITEMS_SEPARATOR : ''
-    }${current}`;
+    const value = `${hValue}${hValue !== '' ? BAGGAGE_ITEMS_SEPARATOR : ''
+      }${current}`;
     return value.length > BAGGAGE_MAX_TOTAL_LENGTH ? hValue : value;
   }, '');
-};
+}
 
-export const getKeyPairs = (baggage: Baggage): string[] => {
+export function getKeyPairs(baggage: Baggage): string[] {
   return baggage
     .getAllEntries()
     .map(
       ([key, value]) =>
         `${encodeURIComponent(key)}=${encodeURIComponent(value.value)}`
     );
-};
+}
 
-export const parsePairKeyValue = (entry: string) => {
+export function parsePairKeyValue(entry: string): ParsedBaggageKeyValue | undefined {
   const valueProps = entry.split(BAGGAGE_PROPERTIES_SEPARATOR);
   if (valueProps.length <= 0) return;
   const keyPairPart = valueProps.shift();
@@ -55,13 +56,13 @@ export const parsePairKeyValue = (entry: string) => {
     );
   }
   return { key, value, metadata };
-};
+}
 
 /**
  * Parse a string serialized in the baggage HTTP Format (without metadata):
  * https://github.com/w3c/baggage/blob/master/baggage/HTTP_HEADER_FORMAT.md
  */
-export const parseKeyPairsIntoRecord = (value?: string) => {
+export function parseKeyPairsIntoRecord(value?: string): Record<string, string> {
   if (typeof value !== 'string' || value.length === 0) return {};
   return value
     .split(BAGGAGE_ITEMS_SEPARATOR)
@@ -70,7 +71,8 @@ export const parseKeyPairsIntoRecord = (value?: string) => {
     })
     .filter(keyPair => keyPair !== undefined && keyPair.value.length > 0)
     .reduce<Record<string, string>>((headers, keyPair) => {
+      // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
       headers[keyPair!.key] = keyPair!.value;
       return headers;
     }, {});
-};
+}

packages/opentelemetry-core/src/common/attributes.ts

@@ -22,6 +22,7 @@ export function sanitizeAttributes(attributes: unknown): SpanAttributes {
     return out;
   }
 
+  // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
   for (const [k, v] of Object.entries(attributes!)) {
     if (isAttributeValue(v)) {
       if (Array.isArray(v)) {

packages/opentelemetry-core/src/common/global-error-handler.ts

@@ -25,16 +25,16 @@ let delegateHandler = loggingErrorHandler();
  * Set the global error handler
  * @param {ErrorHandler} handler
  */
-export function setGlobalErrorHandler(handler: ErrorHandler) {
+export function setGlobalErrorHandler(handler: ErrorHandler): void {
   delegateHandler = handler;
 }
 
 /**
  * Return the global error handler
  * @param {Exception} ex
  */
-export const globalErrorHandler = (ex: Exception) => {
+export function globalErrorHandler(ex: Exception): void {
   try {
     delegateHandler(ex);
   } catch {} // eslint-disable-line no-empty
-};
+}

packages/opentelemetry-core/src/common/time.ts

@@ -115,45 +115,45 @@ export function hrTimeDuration(
 
 /**
  * Convert hrTime to timestamp, for example "2019-05-14T17:00:00.000123456Z"
- * @param hrTime
+ * @param time
  */
-export function hrTimeToTimeStamp(hrTime: api.HrTime): string {
+export function hrTimeToTimeStamp(time: api.HrTime): string {
   const precision = NANOSECOND_DIGITS;
-  const tmp = `${'0'.repeat(precision)}${hrTime[1]}Z`;
+  const tmp = `${'0'.repeat(precision)}${time[1]}Z`;
   const nanoString = tmp.substr(tmp.length - precision - 1);
-  const date = new Date(hrTime[0] * 1000).toISOString();
+  const date = new Date(time[0] * 1000).toISOString();
   return date.replace('000Z', nanoString);
 }
 
 /**
  * Convert hrTime to nanoseconds.
- * @param hrTime
+ * @param time
  */
-export function hrTimeToNanoseconds(hrTime: api.HrTime): number {
-  return hrTime[0] * SECOND_TO_NANOSECONDS + hrTime[1];
+export function hrTimeToNanoseconds(time: api.HrTime): number {
+  return time[0] * SECOND_TO_NANOSECONDS + time[1];
 }
 
 /**
  * Convert hrTime to milliseconds.
- * @param hrTime
+ * @param time
  */
-export function hrTimeToMilliseconds(hrTime: api.HrTime): number {
-  return Math.round(hrTime[0] * 1e3 + hrTime[1] / 1e6);
+export function hrTimeToMilliseconds(time: api.HrTime): number {
+  return Math.round(time[0] * 1e3 + time[1] / 1e6);
 }
 
 /**
  * Convert hrTime to microseconds.
- * @param hrTime
+ * @param time
  */
-export function hrTimeToMicroseconds(hrTime: api.HrTime): number {
-  return Math.round(hrTime[0] * 1e6 + hrTime[1] / 1e3);
+export function hrTimeToMicroseconds(time: api.HrTime): number {
+  return Math.round(time[0] * 1e6 + time[1] / 1e3);
 }
 
 /**
  * check if time is HrTime
  * @param value
  */
-export function isTimeInputHrTime(value: unknown) {
+export function isTimeInputHrTime(value: unknown): value is api.HrTime {
   return (
     Array.isArray(value) &&
     value.length === 2 &&
@@ -166,7 +166,7 @@ export function isTimeInputHrTime(value: unknown) {
  * check if input value is a correct types.TimeInput
  * @param value
  */
-export function isTimeInput(value: unknown) {
+export function isTimeInput(value: unknown): value is api.HrTime | number | Date {
   return (
     isTimeInputHrTime(value) ||
     typeof value === 'number' ||

packages/opentelemetry-core/src/common/types.ts

@@ -31,9 +31,11 @@ export interface TimeOriginLegacy {
  * This interface defines the params that are be added to the wrapped function
  * using the "shimmer.wrap"
  */
-export interface ShimWrapped {
+export interface ShimWrapped extends Function {
   __wrapped: boolean;
+  // eslint-disable-next-line @typescript-eslint/ban-types
   __unwrap: Function;
+  // eslint-disable-next-line @typescript-eslint/ban-types
   __original: Function;
 }
 

packages/opentelemetry-core/src/propagation/composite.ts

@@ -64,7 +64,7 @@ export class CompositePropagator implements TextMapPropagator {
    * @param context Context to inject
    * @param carrier Carrier into which context will be injected
    */
-  inject(context: Context, carrier: unknown, setter: TextMapSetter) {
+  inject(context: Context, carrier: unknown, setter: TextMapSetter): void {
     for (const propagator of this._propagators) {
       try {
         propagator.inject(context, carrier, setter);

packages/opentelemetry-core/src/trace/HttpTraceContextPropagator.ts

@@ -71,7 +71,7 @@ export function parseTraceParent(traceParent: string): SpanContext | null {
  * https://www.w3.org/TR/trace-context/
  */
 export class HttpTraceContextPropagator implements TextMapPropagator {
-  inject(context: Context, carrier: unknown, setter: TextMapSetter) {
+  inject(context: Context, carrier: unknown, setter: TextMapSetter): void {
     const spanContext = trace.getSpanContext(context);
     if (
       !spanContext ||

packages/opentelemetry-core/src/utils/wrap.ts

@@ -20,7 +20,7 @@ import { ShimWrapped } from '../common/types';
  * Checks if certain function has been already wrapped
  * @param func
  */
-export function isWrapped(func: any) {
+export function isWrapped(func: unknown): func is ShimWrapped {
   return (
     typeof func === 'function' &&
     typeof (func as ShimWrapped).__original === 'function' &&