Fix throwing non-new Errors and literals

Author: ddbeck

packages/compute-baseline/src/browser-compat-data/browser.ts

@@ -58,7 +58,7 @@ export class Browser {
     const curr = this.releases.find((r) => r.data.status === "current");
 
     if (curr === undefined) {
-      throw Error(`${browser} does not have a "current" release`);
+      throw new Error(`${browser} does not have a "current" release`);
     }
 
     return curr;
@@ -67,7 +67,7 @@ export class Browser {
   version(versionString: string): Release {
     const result = this.releases.find((r) => r.version === versionString);
     if (result === undefined) {
-      throw Error(`${browser} does not have a '${versionString}' release.`);
+      throw new Error(`${browser} does not have a '${versionString}' release.`);
     }
     return result;
   }

packages/compute-baseline/src/browser-compat-data/feature.ts

@@ -27,7 +27,7 @@ export class Feature {
 
   constructor(id: string, featureData: unknown) {
     if (!isFeatureData(featureData)) {
-      throw `${id} is not valid feature`;
+      throw new Error(`${id} is not valid feature`);
     }
 
     this.id = id;
@@ -77,13 +77,13 @@ export class Feature {
   ): { release: Release; qualifications?: Qualifications }[] {
     const support = this.data?.__compat?.support;
     if (support === undefined) {
-      throw Error("This feature contains no __compat object.");
+      throw new Error("This feature contains no __compat object.");
     }
 
     const statementOrStatements = support[browser.id];
 
     if (statementOrStatements === undefined) {
-      throw Error(`${this} contains no support data for ${browser.name}`);
+      throw new Error(`${this} contains no support data for ${browser.name}`);
     }
 
     const rawStatements = Array.isArray(statementOrStatements)
@@ -95,7 +95,7 @@ export class Feature {
       const s = statement(raw, browser, this);
 
       if (!(s instanceof RealSupportStatement)) {
-        throw Error(
+        throw new Error(
           `${this.id} contains non-real values for ${browser.name}. Cannot expand support.`,
         );
       }

packages/compute-baseline/src/browser-compat-data/release.ts

@@ -36,7 +36,7 @@ export class Release {
 
   compare(otherRelease: Release) {
     if (otherRelease.browser !== this.browser) {
-      throw Error(
+      throw new Error(
         `Cannot compare releases of differing browsers (${this.browser} versus ${otherRelease.browser})`,
       );
     }

packages/compute-baseline/src/browser-compat-data/supportStatements.ts

@@ -153,7 +153,7 @@ export class RealSupportStatement extends SupportStatement {
   // returning `[this.browser.current()]` at least.
   supportedBy(): { release: Release; qualifications?: Qualifications }[] {
     if (this.browser === undefined) {
-      throw Error("This support statement's browser is unknown.");
+      throw new Error("This support statement's browser is unknown.");
     }
 
     if (this.version_added === false) {

packages/compute-baseline/src/browser-compat-data/walk.ts

@@ -73,7 +73,7 @@ export function* walk(entryPoints: string | string[], data: BCD) {
         if (isFeatureData(queryResult)) {
           return lowLevelWalk(queryResult, entryPoint);
         }
-        throw Error("Unhandled traverse target");
+        throw new Error("Unhandled traverse target");
       }),
     );
   }

packages/compute-baseline/src/browser-compat-data/walkUtils.ts

@@ -38,7 +38,7 @@ export function descendantKeys(data: unknown, path?: string): string[] {
     return Object.keys(data).filter((key) => key !== "__compat");
   }
 
-  throw Error(
+  throw new Error(
     `Unhandled traverse into descendants of object at ${path ?? "[root]"}`,
   );
 }