Handle all possible NaN and return undefined instead (#154)

Co-authored-by: pdujtipiya <[email protected]>

src/Parser/DartLintParser.ts

@@ -3,6 +3,7 @@ import { LintItem } from './@types';
 import { LintSeverity } from './@enums/LintSeverity';
 import { splitByLine } from './utils/lineBreak.util';
 import { ProjectType } from '../Config/@enums';
+import { NoNaN } from './utils/number.util';
 
 export class DartLintParser extends Parser {
   parse(content: string): LintItem[] {
@@ -23,8 +24,8 @@ export class DartLintParser extends Parser {
     return {
       ruleId: log,
       log: log,
-      line: Number(line),
-      lineOffset: Number(offset),
+      line: NoNaN(line),
+      lineOffset: NoNaN(offset),
       msg: message,
       source: source,
       severity: DartLintParser.stringToSeverity(severityText),

src/Parser/DotnetBuildParser.spec.ts

@@ -35,8 +35,8 @@ describe('DotnetBuildParser tests', () => {
       ruleId: 'CS5001',
       source: `Broken.csproj`,
       severity: LintSeverity.error,
-      line: NaN,
-      lineOffset: NaN,
+      line: undefined,
+      lineOffset: undefined,
       msg: `CS5001: Program does not contain a static 'Main' method suitable for an entry point`,
       log: logWithNoSource,
       valid: false,

src/Parser/DotnetBuildParser.ts

@@ -8,6 +8,7 @@ import { LintItem } from './@types';
 import { mapSeverity } from './utils/dotnetSeverityMap';
 import { splitByLine } from './utils/lineBreak.util';
 import { ProjectType } from '../Config/@enums';
+import { NoNaN } from './utils/number.util';
 
 export class DotnetBuildParser extends Parser {
   parse(content: string): LintItem[] {
@@ -48,8 +49,8 @@ export class DotnetBuildParser extends Parser {
     return {
       ruleId: errorCode,
       log,
-      line: Number(_line),
-      lineOffset: Number(_lineOffset),
+      line: NoNaN(_line),
+      lineOffset: NoNaN(_lineOffset),
       msg: `${errorCode.trim()}: ${content.trim()}`,
       source: relativeSrcPath ?? basename(slash(_csproj)),
       severity: mapSeverity(severityText),

src/Parser/MSBuildParser.ts

@@ -8,6 +8,7 @@ import { LintItem } from './@types';
 import { mapSeverity } from './utils/dotnetSeverityMap';
 import { splitByLine } from './utils/lineBreak.util';
 import { ProjectType } from '../Config/@enums';
+import { NoNaN } from './utils/number.util';
 
 export class MSBuildParser extends Parser {
   parse(content: string): LintItem[] {
@@ -46,8 +47,8 @@ export class MSBuildParser extends Parser {
     return {
       ruleId: code,
       log,
-      line: Number(_line),
-      lineOffset: Number(_lineOffset),
+      line: NoNaN(_line),
+      lineOffset: NoNaN(_lineOffset),
       msg: `${code.trim()}: ${content.trim()}`,
       source: fileRelativePath ?? fileFullPath,
       severity: mapSeverity(severityText),

src/Parser/utils/number.util.spec.ts

@@ -0,0 +1,13 @@
+import { NoNaN } from './number.util';
+
+describe('NoNaN', () => {
+  it('should return number when provided a number string', () => {
+    const result = NoNaN('69');
+    expect(result).toBe(69);
+  });
+
+  it('should return undefined when provided NaN string', () => {
+    const result = NoNaN('this is NaN for sure');
+    expect(result).toBeUndefined();
+  });
+});

src/Parser/utils/number.util.ts

@@ -0,0 +1,4 @@
+export function NoNaN(nStr: string): number | undefined {
+  const result = Number(nStr);
+  return isNaN(result) ? undefined : result;
+}