add simple infrastructure

.jscsrc

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+{
+  "esnext": true,
+  "requireCurlyBraces": [
+    "if",
+    "else",
+    "for",
+    "while",
+    "do",
+    "try",
+    "catch"
+  ],
+  "requireOperatorBeforeLineBreak": true,
+  "requireCamelCaseOrUpperCaseIdentifiers": true,
+  "maximumLineLength": {
+    "value": 90,
+    "allowComments": true,
+    "allowRegex": true
+  },
+  "validateIndentation": 4,
+  "validateQuoteMarks": "'",
+
+  "disallowMultipleLineStrings": true,
+  "disallowMixedSpacesAndTabs": true,
+  "disallowTrailingWhitespace": true,
+  "disallowSpaceAfterPrefixUnaryOperators": true,
+  "disallowMultipleVarDecl": true,
+
+  "requireSpaceAfterKeywords": [
+    "if",
+    "else",
+    "for",
+    "while",
+    "do",
+    "switch",
+    "return",
+    "try",
+    "catch"
+  ],
+  "requireSpaceBeforeBinaryOperators": true,
+  "requireSpaceAfterBinaryOperators": true,
+  "requireSpacesInConditionalExpression": true,
+  "requireLineFeedAtFileEnd": true,
+  "disallowSpacesInsideObjectBrackets": "all",
+  "disallowSpacesInsideArrayBrackets": "all",
+  "disallowSpacesInsideParentheses": true,
+
+  "disallowMultipleLineBreaks": true,
+
+  "requireParenthesesAroundIIFE": true,
+
+  "disallowKeywords": ["with"],
+
+  "requireSpacesInAnonymousFunctionExpression": {
+    "beforeOpeningRoundBrace": true,
+    "beforeOpeningCurlyBrace": true
+  },
+
+  "requireSpacesInNamedFunctionExpression": {
+    "beforeOpeningCurlyBrace": true
+  },
+
+  "disallowSpacesInNamedFunctionExpression": {
+    "beforeOpeningRoundBrace": true
+  },
+
+  "requireSpacesInFunctionDeclaration": {
+    "beforeOpeningCurlyBrace": true
+  },
+
+  "disallowSpacesInFunctionDeclaration": {
+    "beforeOpeningRoundBrace": true
+  }
+}

.jshintrc

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+{
+    "globals": { },
+    "node": true,
+    "regexdash": true,
+    "browser": true,
+    "sub": true,
+    "curly": true,
+    "camelcase": true,
+    "eqeqeq": true,
+    "forin": true,
+    "newcap": true,
+    "immed": true,
+    "indent": false,
+    "latedef": "nofunc",
+    "noarg": true,
+    "plusplus": false,
+    "quotmark": "single",
+    "undef": true,
+    "unused": true,
+    "strict": false,
+    "trailing": false,
+    "maxparams": false,
+    "maxdepth": false,
+    "maxstatements": false,
+    "maxcomplexity": false,
+    "maxlen": 200,
+    "asi": false,
+    "boss": false,
+    "debug": true,
+    "eqnull": false,
+    "esnext": false,
+    "evil": false,
+    "funcscope": false,
+    "smarttabs": false,
+    "shadow": true,
+    "supernew": true,
+    "devel": true,
+    "node": true,
+    "white": false,
+    "laxbreak": true,
+    "validthis": true,
+    "esnext": true
+}

.npmignore

@@ -0,0 +1,4 @@
+ignore/
+.idea/
+*.sublime-project
+*.sublime-workspace

dist/chai-spies-tdd.js

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+'use strict';
+
+Object.defineProperty(exports, '__esModule', {
+    value: true
+});
+
+exports['default'] = function (chai, utils) {
+    utils.addMethod(chai.assert, 'calledOnce', function (actual, expected, msg) {
+        new chai.Assertion(actual).to.have.been.called.once(msg);
+    });
+
+    utils.addMethod(chai.assert, 'notCalledOnce', function (actual, expected, msg) {
+        new chai.Assertion(actual).not.to.have.been.called.once(msg);
+    });
+};
+
+module.exports = exports['default'];

package.json

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+{
+  "name": "chai-spies-tdd",
+  "version": "0.0.0",
+  "author": "Eryk Napierala",
+  "description": "TDD-style interface for chai-spies.",
+  "license": "MIT",
+  "homepage": "https://github.com/erykpiast/chai-spies-tdd",
+  "bugs": "https://github.com/erykpiast/chai-spies-tdd/issues",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/erykpiast/chai-spies-tdd"
+  },
+  "keywords": [
+    "cyclejs",
+    "streams",
+    "group"
+  ],
+  "main": "dist/chai-spies-tdd.js",
+  "peerDependencies": {
+    "chai-spies": ">=0.6"
+  },
+  "devDependencies": {
+    "babel": "~5.2",
+    "jscs": "~1.12",
+    "jshint": "~2.7"
+  },
+  "engines": {
+    "node": ">=0.10.0"
+  },
+  "scripts": {
+    "jshint": "jshint src/",
+    "jscs": "jscs src/",
+    "precompile": "rm -rf dist/ && mkdir -p dist",
+    "compile": "babel -d dist/ src/",
+    "prepublish": "npm run compile",
+    "release": "npm run release-patch",
+    "release-patch": "git checkout master && npm run compile; git commit -a -m 'Build dist/'; npm version patch && git push origin master --tags && npm publish",
+    "release-minor": "git checkout master && npm run compile; git commit -a -m 'Build dist/'; npm version minor && git push origin master --tags && npm publish",
+    "release-major": "git checkout master && npm run compile; git commit -a -m 'Build dist/'; npm version major && git push origin master --tags && npm publish"
+  }
+}

src/chai-spies-tdd.js

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+export default function (chai, utils) {
+    utils.addMethod(chai.assert, 'calledOnce', function (actual, expected, msg) {
+        new chai.Assertion(actual).to.have.been.called.once(msg);
+    });
+
+    utils.addMethod(chai.assert, 'notCalledOnce', function (actual, expected, msg) {
+        new chai.Assertion(actual).not.to.have.been.called.once(msg);
+    });
+}