Move error messages from config-utils to their own file

src/error-messages.ts

@@ -0,0 +1,66 @@
+const PACKS_PROPERTY = "packs";
+
+export function getConfigFileOutsideWorkspaceErrorMessage(
+  configFile: string,
+): string {
+  return `The configuration file "${configFile}" is outside of the workspace`;
+}
+
+export function getConfigFileDoesNotExistErrorMessage(
+  configFile: string,
+): string {
+  return `The configuration file "${configFile}" does not exist`;
+}
+
+export function getConfigFileRepoFormatInvalidMessage(
+  configFile: string,
+): string {
+  let error = `The configuration file "${configFile}" is not a supported remote file reference.`;
+  error += " Expected format <owner>/<repository>/<file-path>@<ref>";
+
+  return error;
+}
+
+export function getConfigFileFormatInvalidMessage(configFile: string): string {
+  return `The configuration file "${configFile}" could not be read`;
+}
+
+export function getConfigFileDirectoryGivenMessage(configFile: string): string {
+  return `The configuration file "${configFile}" looks like a directory, not a file`;
+}
+
+export function getConfigFilePropertyError(
+  configFile: string | undefined,
+  property: string,
+  error: string,
+): string {
+  if (configFile === undefined) {
+    return `The workflow property "${property}" is invalid: ${error}`;
+  } else {
+    return `The configuration file "${configFile}" is invalid: property "${property}" ${error}`;
+  }
+}
+
+export function getPacksStrInvalid(
+  packStr: string,
+  configFile?: string,
+): string {
+  return configFile
+    ? getConfigFilePropertyError(
+        configFile,
+        PACKS_PROPERTY,
+        `"${packStr}" is not a valid pack`,
+      )
+    : `"${packStr}" is not a valid pack`;
+}
+
+export function getNoLanguagesError(): string {
+  return (
+    "Did not detect any languages to analyze. " +
+    "Please update input in workflow or check that GitHub detects the correct languages in your repository."
+  );
+}
+
+export function getUnknownLanguagesError(languages: string[]): string {
+  return `Did not recognize the following languages: ${languages.join(", ")}`;
+}