EOL semantics by adding .gitattributes and changing tsconfig.json (#1550)

* style(opentelemetry-js): .gitattribute and tsconfig changes for EOL normalization

* fix(opentelemetry-js): moved 'newLine': 'LF' into tsconfig.base instead of individual

* fix(opentelemetry-js): changed version script to use LF instead of OS.EOL

* fix(opentelemetry-js): simplified version script

.gitattributes

@@ -0,0 +1,39 @@
+## This .gitattributes file automatically formats the EOL character in certain filetypes within the repository
+
+## Source code
+# JavaScript, TypeScript, c, and h source files
+*.js                    text eol=lf
+*.ts                    text eol=lf
+*.h                     text eol=lf diff=cpp
+*.c                     text eol=lf diff=cpp
+
+# Shell scripts
+*.sh                    text eol=lf
+*.bash                  text eol=lf
+
+# Windows batch and PowerShell scripts
+*.bat                   text eol=crlf
+*.cmd                   text eol=crlf
+*.ps1                   text eol=crlf
+
+##### Other file types #####
+
+## Text files and documentation
+*.txt                   text
+README*                 text
+RELEASING*              text
+CHANGELOG*              text
+CONTRIBUTING*           text
+INSTALL*                text
+LICENSE*                text
+
+## Non-text documentation
+*.html                  text diff=html
+*.pdf                   binary
+*.json                  text
+*.rtf                   binary
+
+## Git Properties
+.gitignore              text
+.gitmodules             text
+.gitattributes          text

packages/tsconfig.base.json

@@ -15,7 +15,8 @@
     "strict": true,
     "strictNullChecks": true,
     "target": "es2017",
-    "incremental": true
+    "incremental": true,
+    "newLine": "LF"
   },
   "exclude": [
     "node_modules"

scripts/version-update.js

@@ -45,4 +45,4 @@ export const VERSION = '${pjson.version}';
 
 const fileUrl = path.join(appRoot, "src", "version.ts")
 
-fs.writeFileSync(fileUrl, content.replace(/\n/g, os.EOL));
+fs.writeFileSync(fileUrl, content);