Initial repository setup.

.eslintrc.js

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+module.exports = {
+  root: true,
+  env: {
+    node: true,
+    mocha: true
+  },
+  extends: [
+    "airbnb-typescript/base",
+  ],
+  rules: {
+    'no-console': process.env.NODE_ENV === 'production' ? 'error' : 'off',
+    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
+    'linebreak-style': process.env.NODE_ENV === 'production' ? ['error', 'windows'] : ['off', 'windows'],
+  },
+  parserOptions: {
+    project: './tsconfig.json',
+  },
+};

.gitattributes

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+* text=auto eol=lf

.gitignore

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+.vscode
+.nyc_output/
+node_modules
+out
+reports

.nycrc

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+{
+  "extension": [
+    ".ts"
+  ],
+  "reporter": [
+    "text",
+    "html"
+  ],
+  "all": true,
+  "include": [
+    "out/**/*"
+  ],
+  "report-dir": "./reports/coverage"
+}