diff --git a/.gitignore b/.gitignore
index 6704566..adb2c19 100644
--- a/.gitignore
+++ b/.gitignore
@@ -80,7 +80,6 @@ typings/
 
 # Nuxt.js build / generate output
 .nuxt
-dist
 
 # Gatsby files
 .cache/
diff --git a/dist/src/index.d.ts b/dist/src/index.d.ts
new file mode 100644
index 0000000..29d85df
--- /dev/null
+++ b/dist/src/index.d.ts
@@ -0,0 +1,2 @@
+import "./type-extensions";
+//# sourceMappingURL=index.d.ts.map
\ No newline at end of file
diff --git a/dist/src/index.d.ts.map b/dist/src/index.d.ts.map
new file mode 100644
index 0000000..f0bd0cc
--- /dev/null
+++ b/dist/src/index.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"file":"index.d.ts","sourceRoot":"","sources":["../../src/index.ts"],"names":[],"mappings":"AAIA,OAAO,mBAAmB,CAAC"}
\ No newline at end of file
diff --git a/dist/src/index.js b/dist/src/index.js
new file mode 100644
index 0000000..b71a18d
--- /dev/null
+++ b/dist/src/index.js
@@ -0,0 +1,110 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+const config_1 = require("hardhat/config");
+const chokidar_1 = __importDefault(require("chokidar"));
+require("./type-extensions");
+config_1.extendConfig((config, userConfig) => {
+    var _a;
+    let w = (_a = userConfig.watcher) !== null && _a !== void 0 ? _a : {};
+    const normalizedWatcher = {};
+    Object.entries(w).forEach(([name, task]) => {
+        var _a, _b, _c;
+        normalizedWatcher[name] = {
+            tasks: ((_a = task === null || task === void 0 ? void 0 : task.tasks) !== null && _a !== void 0 ? _a : []).map((t) => {
+                var _a;
+                if (typeof t === "string") {
+                    return {
+                        command: t,
+                        params: {},
+                    };
+                }
+                else {
+                    return {
+                        command: t.command,
+                        params: (_a = t.params) !== null && _a !== void 0 ? _a : {},
+                    };
+                }
+            }),
+            files: (_b = task.files) !== null && _b !== void 0 ? _b : [config.paths.sources],
+            verbose: (_c = task.verbose) !== null && _c !== void 0 ? _c : false,
+        };
+    });
+    config.watcher = normalizedWatcher;
+});
+config_1.task("watch", "Start the file watcher")
+    .addPositionalParam("watcherTask", "watcher task to run (as defined in hardhat config)")
+    .setAction(async ({ watcherTask }, { run, tasks, config: { watcher, paths } }) => {
+    if (!(watcherTask in watcher)) {
+        console.log(`Watcher task "${watcherTask}" was not found in hardhat config.`);
+        process.exit(1);
+    }
+    const taskConfig = watcher[watcherTask];
+    const logVerbose = (...messages) => {
+        if (taskConfig.verbose)
+            console.log(...messages);
+    };
+    logVerbose("Starting file watcher", taskConfig.files);
+    const templateReplace = (value, pattern, replace) => {
+        if (Array.isArray(value)) {
+            return value.map(v => v.replace(pattern, replace));
+        }
+        else if (typeof (value) == 'string') {
+            return value.replace(pattern, replace);
+        }
+        else {
+            return value;
+        }
+    };
+    const paramsTemplateReplace = (params, pattern, replace) => {
+        const newParams = {};
+        Object.keys(params).forEach(k => {
+            newParams[k] = templateReplace(params[k], pattern, replace);
+        });
+        return newParams;
+    };
+    // Validate tasks
+    taskConfig.tasks.forEach((task) => {
+        if (!(task.command in tasks)) {
+            console.log(`Watcher error: task "${task.command}" is not supported by hardhat runtime.`);
+            console.log(`Found tasks: ${JSON.stringify(Object.keys(tasks))}`);
+            process.exit(1);
+        }
+    });
+    chokidar_1.default
+        .watch(taskConfig.files, {
+        ignoreInitial: true,
+        usePolling: true,
+        interval: 250,
+    })
+        .on("change", async (path) => {
+        for (let i = 0; i < taskConfig.tasks.length; i++) {
+            const task = taskConfig.tasks[i];
+            // Replace template pattern with the changed file
+            const newParams = paramsTemplateReplace(task.params, '{path}', path);
+            logVerbose(`Running task "${task.command}" with params ${JSON.stringify(newParams)}`);
+            try {
+                await run(task.command, newParams);
+                // This hack is required to allow running Mocha commands. Check out https://github.com/mochajs/mocha/issues/1938 for more details.
+                Object.keys(require.cache).forEach(function (key) {
+                    if (key.startsWith(paths.tests)) {
+                        delete require.cache[key];
+                    }
+                });
+            }
+            catch (err) {
+                console.log(`Task "${task.command}" failed.`);
+                console.log(err);
+            }
+        }
+    })
+        .on("error", (error) => {
+        console.log(`Watcher error: ${error}`);
+        process.exit(1);
+    });
+    console.log("File watcher started.");
+    await new Promise((resolve) => setTimeout(resolve, 2000000000));
+});
+//# sourceMappingURL=index.js.map
\ No newline at end of file
diff --git a/dist/src/index.js.map b/dist/src/index.js.map
new file mode 100644
index 0000000..1ba74b4
--- /dev/null
+++ b/dist/src/index.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"index.js","sourceRoot":"","sources":["../../src/index.ts"],"names":[],"mappings":";;;;;AAAA,2CAAoD;AAEpD,wDAAgC;AAEhC,6BAA2B;AAE3B,qBAAY,CACV,CAAC,MAAqB,EAAE,UAAuC,EAAE,EAAE;;IACjE,IAAI,CAAC,SAAG,UAAU,CAAC,OAAO,mCAAI,EAAE,CAAC;IAEjC,MAAM,iBAAiB,GAAkB,EAAE,CAAC;IAE5C,MAAM,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC,OAAO,CAAC,CAAC,CAAC,IAAI,EAAE,IAAI,CAAC,EAAE,EAAE;;QACzC,iBAAiB,CAAC,IAAI,CAAC,GAAG;YACxB,KAAK,EAAE,OAAC,IAAI,aAAJ,IAAI,uBAAJ,IAAI,CAAE,KAAK,mCAAI,EAAE,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,EAAE;;gBACnC,IAAI,OAAO,CAAC,KAAK,QAAQ,EAAE;oBACzB,OAAO;wBACL,OAAO,EAAE,CAAC;wBACV,MAAM,EAAE,EAAE;qBACX,CAAC;iBACH;qBAAM;oBACL,OAAO;wBACL,OAAO,EAAE,CAAC,CAAC,OAAO;wBAClB,MAAM,QAAE,CAAC,CAAC,MAAM,mCAAI,EAAE;qBACvB,CAAC;iBACH;YACH,CAAC,CAAC;YACF,KAAK,QAAE,IAAI,CAAC,KAAK,mCAAI,CAAC,MAAM,CAAC,KAAK,CAAC,OAAO,CAAC;YAC3C,OAAO,QAAE,IAAI,CAAC,OAAO,mCAAI,KAAK;SAC/B,CAAC;IACJ,CAAC,CAAC,CAAC;IAEH,MAAM,CAAC,OAAO,GAAG,iBAAiB,CAAC;AACrC,CAAC,CACF,CAAC;AAEF,aAAI,CAAC,OAAO,EAAE,wBAAwB,CAAC;KACpC,kBAAkB,CACjB,aAAa,EACb,oDAAoD,CACrD;KACA,SAAS,CACR,KAAK,EAAE,EAAE,WAAW,EAAE,EAAE,EAAE,GAAG,EAAE,KAAK,EAAE,MAAM,EAAE,EAAE,OAAO,EAAE,KAAK,EAAE,EAAE,EAAE,EAAE;IACpE,IAAI,CAAC,CAAC,WAAW,IAAI,OAAO,CAAC,EAAE;QAC7B,OAAO,CAAC,GAAG,CACT,iBAAiB,WAAW,oCAAoC,CACjE,CAAC;QACF,OAAO,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;KACjB;IAED,MAAM,UAAU,GAAG,OAAO,CAAC,WAAW,CAAC,CAAC;IAExC,MAAM,UAAU,GAAG,CAAC,GAAG,QAAa,EAAE,EAAE;QACtC,IAAI,UAAU,CAAC,OAAO;YAAE,OAAO,CAAC,GAAG,CAAC,GAAG,QAAQ,CAAC,CAAC;IACnD,CAAC,CAAC;IAEF,UAAU,CAAC,uBAAuB,EAAE,UAAU,CAAC,KAAK,CAAC,CAAC;IAEtD,MAAM,eAAe,GAAG,CAAC,KAAU,EAAE,OAAe,EAAE,OAAe,EAAE,EAAE;QACvE,IAAI,KAAK,CAAC,OAAO,CAAC,KAAK,CAAC,EAAE;YACxB,OAAO,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,OAAO,CAAC,OAAO,EAAE,OAAO,CAAC,CAAC,CAAC;SACpD;aAAM,IAAI,OAAM,CAAC,KAAK,CAAC,IAAI,QAAQ,EAAE;YACpC,OAAO,KAAK,CAAC,OAAO,CAAC,OAAO,EAAE,OAAO,CAAC,CAAC;SACxC;aAAM;YACL,OAAO,KAAK,CAAA;SACb;IACH,CAAC,CAAA;IAED,MAAM,qBAAqB,GAAG,CAAC,MAAW,EAAE,OAAe,EAAE,OAAe,EAAE,EAAE;QAC9E,MAAM,SAAS,GAAQ,EAAE,CAAA;QACzB,MAAM,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC,OAAO,CAAC,CAAC,CAAC,EAAE;YAC9B,SAAS,CAAC,CAAC,CAAC,GAAG,eAAe,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,OAAO,EAAE,OAAO,CAAC,CAAA;QAC7D,CAAC,CAAC,CAAC;QACH,OAAO,SAAS,CAAC;IACnB,CAAC,CAAA;IAED,iBAAiB;IACjB,UAAU,CAAC,KAAK,CAAC,OAAO,CAAC,CAAC,IAAI,EAAE,EAAE;QAChC,IAAI,CAAC,CAAC,IAAI,CAAC,OAAO,IAAI,KAAK,CAAC,EAAE;YAC5B,OAAO,CAAC,GAAG,CACT,wBAAwB,IAAI,CAAC,OAAO,wCAAwC,CAC7E,CAAC;YACF,OAAO,CAAC,GAAG,CAAC,gBAAgB,IAAI,CAAC,SAAS,CAAC,MAAM,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC,EAAE,CAAC,CAAC;YAClE,OAAO,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;SACjB;IACH,CAAC,CAAC,CAAC;IAEH,kBAAQ;SACL,KAAK,CAAC,UAAU,CAAC,KAAK,EAAE;QACvB,aAAa,EAAE,IAAI;QACnB,UAAU,EAAE,IAAI;QAChB,QAAQ,EAAE,GAAG;KACd,CAAC;SACD,EAAE,CAAC,QAAQ,EAAE,KAAK,EAAC,IAAI,EAAC,EAAE;QACzB,KAAK,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,GAAG,UAAU,CAAC,KAAK,CAAC,MAAM,EAAE,CAAC,EAAE,EAAE;YAChD,MAAM,IAAI,GAAG,UAAU,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;YAEjC,iDAAiD;YACjD,MAAM,SAAS,GAAG,qBAAqB,CAAC,IAAI,CAAC,MAAM,EAAE,QAAQ,EAAE,IAAI,CAAC,CAAA;YAEpE,UAAU,CACR,iBAAiB,IAAI,CAAC,OAAO,iBAAiB,IAAI,CAAC,SAAS,CAC1D,SAAS,CACV,EAAE,CACJ,CAAC;YACF,IAAI;gBACF,MAAM,GAAG,CAAC,IAAI,CAAC,OAAO,EAAE,SAAS,CAAC,CAAC;gBACnC,kIAAkI;gBAClI,MAAM,CAAC,IAAI,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC,OAAO,CAAC,UAAU,GAAG;oBAC9C,IAAI,GAAG,CAAC,UAAU,CAAC,KAAK,CAAC,KAAK,CAAC,EAAE;wBAC/B,OAAO,OAAO,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC;qBAC3B;gBACH,CAAC,CAAC,CAAC;aACJ;YAAC,OAAO,GAAG,EAAE;gBACZ,OAAO,CAAC,GAAG,CAAC,SAAS,IAAI,CAAC,OAAO,WAAW,CAAC,CAAC;gBAC9C,OAAO,CAAC,GAAG,CAAC,GAAG,CAAC,CAAC;aAClB;SACF;IACH,CAAC,CAAC;SACD,EAAE,CAAC,OAAO,EAAE,CAAC,KAAY,EAAE,EAAE;QAC5B,OAAO,CAAC,GAAG,CAAC,kBAAkB,KAAK,EAAE,CAAC,CAAC;QACvC,OAAO,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;IAClB,CAAC,CAAC,CAAC;IAEL,OAAO,CAAC,GAAG,CAAC,uBAAuB,CAAC,CAAC;IAErC,MAAM,IAAI,OAAO,CAAC,CAAC,OAAO,EAAE,EAAE,CAAC,UAAU,CAAC,OAAO,EAAE,UAAU,CAAC,CAAC,CAAC;AAClE,CAAC,CACF,CAAC"}
\ No newline at end of file
diff --git a/dist/src/type-extensions.d.ts b/dist/src/type-extensions.d.ts
new file mode 100644
index 0000000..d85b69e
--- /dev/null
+++ b/dist/src/type-extensions.d.ts
@@ -0,0 +1,32 @@
+import "hardhat/types/config";
+import "hardhat/types/runtime";
+declare module "hardhat/types/config" {
+    type HardhatTask = string | ExpandedHardhatTask;
+    type ExpandedHardhatTask = {
+        command: string;
+        params?: {
+            [key: string]: any;
+        };
+    };
+    type WatcherTask = {
+        tasks?: HardhatTask[];
+        files?: string[];
+        verbose?: boolean;
+    };
+    interface HardhatUserConfig {
+        watcher?: {
+            [key: string]: WatcherTask;
+        };
+    }
+    type WatcherConfig = {
+        [key: string]: {
+            tasks: Required<ExpandedHardhatTask>[];
+            files: string[];
+            verbose: boolean;
+        };
+    };
+    interface HardhatConfig {
+        watcher: WatcherConfig;
+    }
+}
+//# sourceMappingURL=type-extensions.d.ts.map
\ No newline at end of file
diff --git a/dist/src/type-extensions.d.ts.map b/dist/src/type-extensions.d.ts.map
new file mode 100644
index 0000000..1e5abf0
--- /dev/null
+++ b/dist/src/type-extensions.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"file":"type-extensions.d.ts","sourceRoot":"","sources":["../../src/type-extensions.ts"],"names":[],"mappings":"AAAA,OAAO,sBAAsB,CAAC;AAC9B,OAAO,uBAAuB,CAAC;AAE/B,OAAO,QAAQ,sBAAsB,CAAC;IACpC,KAAY,WAAW,GAAG,MAAM,GAAG,mBAAmB,CAAC;IAEvD,KAAY,mBAAmB,GAAG;QAChC,OAAO,EAAE,MAAM,CAAC;QAChB,MAAM,CAAC,EAAE;YACP,CAAC,GAAG,EAAE,MAAM,GAAG,GAAG,CAAC;SACpB,CAAC;KACH,CAAC;IAEF,KAAY,WAAW,GAAG;QACxB,KAAK,CAAC,EAAE,WAAW,EAAE,CAAC;QACtB,KAAK,CAAC,EAAE,MAAM,EAAE,CAAC;QACjB,OAAO,CAAC,EAAE,OAAO,CAAC;KACnB,CAAC;IAGF,UAAiB,iBAAiB;QAChC,OAAO,CAAC,EAAE;YAAE,CAAC,GAAG,EAAE,MAAM,GAAG,WAAW,CAAA;SAAE,CAAC;KAC1C;IAED,KAAY,aAAa,GAAG;QAC1B,CAAC,GAAG,EAAE,MAAM,GAAG;YACb,KAAK,EAAE,QAAQ,CAAC,mBAAmB,CAAC,EAAE,CAAC;YACvC,KAAK,EAAE,MAAM,EAAE,CAAC;YAChB,OAAO,EAAE,OAAO,CAAC;SAClB,CAAC;KACH,CAAC;IAGF,UAAiB,aAAa;QAC5B,OAAO,EAAE,aAAa,CAAC;KACxB;CACF"}
\ No newline at end of file
diff --git a/dist/src/type-extensions.js b/dist/src/type-extensions.js
new file mode 100644
index 0000000..8f9d70f
--- /dev/null
+++ b/dist/src/type-extensions.js
@@ -0,0 +1,5 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+require("hardhat/types/config");
+require("hardhat/types/runtime");
+//# sourceMappingURL=type-extensions.js.map
\ No newline at end of file
diff --git a/dist/src/type-extensions.js.map b/dist/src/type-extensions.js.map
new file mode 100644
index 0000000..ad58e0a
--- /dev/null
+++ b/dist/src/type-extensions.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"type-extensions.js","sourceRoot":"","sources":["../../src/type-extensions.ts"],"names":[],"mappings":";;AAAA,gCAA8B;AAC9B,iCAA+B"}
\ No newline at end of file
diff --git a/dist/test/fixture-projects/hardhat-project/hardhat.config.d.ts b/dist/test/fixture-projects/hardhat-project/hardhat.config.d.ts
new file mode 100644
index 0000000..1f51f3e
--- /dev/null
+++ b/dist/test/fixture-projects/hardhat-project/hardhat.config.d.ts
@@ -0,0 +1,5 @@
+import { HardhatUserConfig } from "hardhat/types";
+import "../../../src/index";
+declare const config: HardhatUserConfig;
+export default config;
+//# sourceMappingURL=hardhat.config.d.ts.map
\ No newline at end of file
diff --git a/dist/test/fixture-projects/hardhat-project/hardhat.config.d.ts.map b/dist/test/fixture-projects/hardhat-project/hardhat.config.d.ts.map
new file mode 100644
index 0000000..42cae4b
--- /dev/null
+++ b/dist/test/fixture-projects/hardhat-project/hardhat.config.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"file":"hardhat.config.d.ts","sourceRoot":"","sources":["../../../../test/fixture-projects/hardhat-project/hardhat.config.ts"],"names":[],"mappings":"AAAA,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAElD,OAAO,oBAAoB,CAAC;AAE5B,QAAA,MAAM,MAAM,EAAE,iBAUb,CAAC;AAEF,eAAe,MAAM,CAAC"}
\ No newline at end of file
diff --git a/dist/test/fixture-projects/hardhat-project/hardhat.config.js b/dist/test/fixture-projects/hardhat-project/hardhat.config.js
new file mode 100644
index 0000000..1eb70ee
--- /dev/null
+++ b/dist/test/fixture-projects/hardhat-project/hardhat.config.js
@@ -0,0 +1,16 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+require("../../../src/index");
+const config = {
+    solidity: "0.7.3",
+    defaultNetwork: "hardhat",
+    watcher: {
+        compilation: {
+            tasks: ["clean", { command: "compile", params: { quiet: true } }],
+            files: ["./contracts"],
+            verbose: true,
+        },
+    },
+};
+exports.default = config;
+//# sourceMappingURL=hardhat.config.js.map
\ No newline at end of file
diff --git a/dist/test/fixture-projects/hardhat-project/hardhat.config.js.map b/dist/test/fixture-projects/hardhat-project/hardhat.config.js.map
new file mode 100644
index 0000000..c1ddd94
--- /dev/null
+++ b/dist/test/fixture-projects/hardhat-project/hardhat.config.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"hardhat.config.js","sourceRoot":"","sources":["../../../../test/fixture-projects/hardhat-project/hardhat.config.ts"],"names":[],"mappings":";;AAEA,8BAA4B;AAE5B,MAAM,MAAM,GAAsB;IAChC,QAAQ,EAAE,OAAO;IACjB,cAAc,EAAE,SAAS;IACzB,OAAO,EAAE;QACP,WAAW,EAAE;YACX,KAAK,EAAE,CAAC,OAAO,EAAE,EAAE,OAAO,EAAE,SAAS,EAAE,MAAM,EAAE,EAAE,KAAK,EAAE,IAAI,EAAE,EAAE,CAAC;YACjE,KAAK,EAAE,CAAC,aAAa,CAAC;YACtB,OAAO,EAAE,IAAI;SACd;KACF;CACF,CAAC;AAEF,kBAAe,MAAM,CAAC"}
\ No newline at end of file
diff --git a/dist/test/helpers.d.ts b/dist/test/helpers.d.ts
new file mode 100644
index 0000000..fda9064
--- /dev/null
+++ b/dist/test/helpers.d.ts
@@ -0,0 +1,11 @@
+import { HardhatRuntimeEnvironment } from "hardhat/types";
+declare module "mocha" {
+    interface Context {
+        hre: HardhatRuntimeEnvironment;
+    }
+}
+export declare function useEnvironment(fixtureProjectName: string): void;
+export declare function sleep(ms: number): Promise<unknown>;
+export declare const readArtifactDir: (hre: HardhatRuntimeEnvironment) => string[];
+export declare const simulateFileChange: (dummyFile: string, fileToOverwrite?: string) => void;
+//# sourceMappingURL=helpers.d.ts.map
\ No newline at end of file
diff --git a/dist/test/helpers.d.ts.map b/dist/test/helpers.d.ts.map
new file mode 100644
index 0000000..904e019
--- /dev/null
+++ b/dist/test/helpers.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"file":"helpers.d.ts","sourceRoot":"","sources":["../../test/helpers.ts"],"names":[],"mappings":"AACA,OAAO,EAAE,yBAAyB,EAAE,MAAM,eAAe,CAAC;AAI1D,OAAO,QAAQ,OAAO,CAAC;IACrB,UAAU,OAAO;QACf,GAAG,EAAE,yBAAyB,CAAC;KAChC;CACF;AAED,wBAAgB,cAAc,CAAC,kBAAkB,EAAE,MAAM,QAUxD;AAED,wBAAgB,KAAK,CAAC,EAAE,EAAE,MAAM,oBAE/B;AAED,eAAO,MAAM,eAAe,QAAS,yBAAyB,KAAG,MAAM,EAGpE,CAAC;AAEJ,eAAO,MAAM,kBAAkB,cAClB,MAAM,mCAShB,CAAC"}
\ No newline at end of file
diff --git a/dist/test/helpers.js b/dist/test/helpers.js
new file mode 100644
index 0000000..b14ab4d
--- /dev/null
+++ b/dist/test/helpers.js
@@ -0,0 +1,26 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.simulateFileChange = exports.readArtifactDir = exports.sleep = exports.useEnvironment = void 0;
+const plugins_testing_1 = require("hardhat/plugins-testing");
+const path_1 = __importDefault(require("path"));
+const fs_1 = __importDefault(require("fs"));
+function useEnvironment(fixtureProjectName) {
+    beforeEach("Loading hardhat environment", function () {
+        process.chdir(path_1.default.join(__dirname, "fixture-projects", fixtureProjectName));
+        this.hre = require("hardhat");
+    });
+    afterEach("Resetting hardhat", function () {
+        plugins_testing_1.resetHardhatContext();
+    });
+}
+exports.useEnvironment = useEnvironment;
+function sleep(ms) {
+    return new Promise((resolve) => setTimeout(resolve, ms));
+}
+exports.sleep = sleep;
+exports.readArtifactDir = (hre) => fs_1.default.readdirSync(path_1.default.join(hre.config.paths.artifacts, "contracts/Contract.sol"));
+exports.simulateFileChange = (dummyFile, fileToOverwrite = "contracts/Contract.sol") => fs_1.default.copyFileSync(path_1.default.join(__dirname, `./dummyFiles/${dummyFile}`), path_1.default.join(__dirname, `./fixture-projects/hardhat-project/${fileToOverwrite}`));
+//# sourceMappingURL=helpers.js.map
\ No newline at end of file
diff --git a/dist/test/helpers.js.map b/dist/test/helpers.js.map
new file mode 100644
index 0000000..b265012
--- /dev/null
+++ b/dist/test/helpers.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"helpers.js","sourceRoot":"","sources":["../../test/helpers.ts"],"names":[],"mappings":";;;;;;AAAA,6DAA8D;AAE9D,gDAAwB;AACxB,4CAAoB;AAQpB,SAAgB,cAAc,CAAC,kBAA0B;IACvD,UAAU,CAAC,6BAA6B,EAAE;QACxC,OAAO,CAAC,KAAK,CAAC,cAAI,CAAC,IAAI,CAAC,SAAS,EAAE,kBAAkB,EAAE,kBAAkB,CAAC,CAAC,CAAC;QAE5E,IAAI,CAAC,GAAG,GAAG,OAAO,CAAC,SAAS,CAAC,CAAC;IAChC,CAAC,CAAC,CAAC;IAEH,SAAS,CAAC,mBAAmB,EAAE;QAC7B,qCAAmB,EAAE,CAAC;IACxB,CAAC,CAAC,CAAC;AACL,CAAC;AAVD,wCAUC;AAED,SAAgB,KAAK,CAAC,EAAU;IAC9B,OAAO,IAAI,OAAO,CAAC,CAAC,OAAO,EAAE,EAAE,CAAC,UAAU,CAAC,OAAO,EAAE,EAAE,CAAC,CAAC,CAAC;AAC3D,CAAC;AAFD,sBAEC;AAEY,QAAA,eAAe,GAAG,CAAC,GAA8B,EAAY,EAAE,CAC1E,YAAE,CAAC,WAAW,CACZ,cAAI,CAAC,IAAI,CAAC,GAAG,CAAC,MAAM,CAAC,KAAK,CAAC,SAAS,EAAE,wBAAwB,CAAC,CAChE,CAAC;AAES,QAAA,kBAAkB,GAAG,CAChC,SAAiB,EACjB,eAAe,GAAG,wBAAwB,EAC1C,EAAE,CACF,YAAE,CAAC,YAAY,CACb,cAAI,CAAC,IAAI,CAAC,SAAS,EAAE,gBAAgB,SAAS,EAAE,CAAC,EACjD,cAAI,CAAC,IAAI,CACP,SAAS,EACT,sCAAsC,eAAe,EAAE,CACxD,CACF,CAAC"}
\ No newline at end of file
diff --git a/dist/test/project.test.d.ts b/dist/test/project.test.d.ts
new file mode 100644
index 0000000..6fe7527
--- /dev/null
+++ b/dist/test/project.test.d.ts
@@ -0,0 +1,2 @@
+export {};
+//# sourceMappingURL=project.test.d.ts.map
\ No newline at end of file
diff --git a/dist/test/project.test.d.ts.map b/dist/test/project.test.d.ts.map
new file mode 100644
index 0000000..483991c
--- /dev/null
+++ b/dist/test/project.test.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"file":"project.test.d.ts","sourceRoot":"","sources":["../../test/project.test.ts"],"names":[],"mappings":""}
\ No newline at end of file
diff --git a/dist/test/project.test.js b/dist/test/project.test.js
new file mode 100644
index 0000000..2bba50b
--- /dev/null
+++ b/dist/test/project.test.js
@@ -0,0 +1,33 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+// tslint:disable-next-line no-implicit-dependencies
+const chai_1 = require("chai");
+const helpers_1 = require("./helpers");
+describe("Watcher tests", function () {
+    this.timeout(15000);
+    helpers_1.useEnvironment("hardhat-project");
+    beforeEach(async function () {
+        await this.hre.run("clean");
+    });
+    it("Watch contracts and clean + compile on change", async function () {
+        try {
+            helpers_1.simulateFileChange("Contract.sol");
+            this.hre.run("watch", { watcherTask: "compilation" });
+            await helpers_1.sleep(1000);
+            console.log("=========== Simulating file change =============");
+            helpers_1.simulateFileChange("Contract2.sol");
+            await helpers_1.sleep(2000);
+            const dir = helpers_1.readArtifactDir(this.hre);
+            chai_1.expect(dir).to.contain("TestContract2.json");
+            console.log("=========== Simulating file change =============");
+            helpers_1.simulateFileChange("Contract3.sol");
+            await helpers_1.sleep(2000);
+            const dir2 = helpers_1.readArtifactDir(this.hre);
+            chai_1.expect(dir2).to.contain("TestContract3.json");
+        }
+        catch (error) {
+            chai_1.assert.fail(error.message);
+        }
+    });
+});
+//# sourceMappingURL=project.test.js.map
\ No newline at end of file
diff --git a/dist/test/project.test.js.map b/dist/test/project.test.js.map
new file mode 100644
index 0000000..a3def35
--- /dev/null
+++ b/dist/test/project.test.js.map
@@ -0,0 +1 @@
+{"version":3,"file":"project.test.js","sourceRoot":"","sources":["../../test/project.test.ts"],"names":[],"mappings":";;AAAA,oDAAoD;AACpD,+BAAsC;AAEtC,uCAKmB;AAEnB,QAAQ,CAAC,eAAe,EAAE;IACxB,IAAI,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC;IACpB,wBAAc,CAAC,iBAAiB,CAAC,CAAC;IAElC,UAAU,CAAC,KAAK;QACd,MAAM,IAAI,CAAC,GAAG,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC;IAC9B,CAAC,CAAC,CAAC;IAEH,EAAE,CAAC,+CAA+C,EAAE,KAAK;QACvD,IAAI;YACF,4BAAkB,CAAC,cAAc,CAAC,CAAC;YACnC,IAAI,CAAC,GAAG,CAAC,GAAG,CAAC,OAAO,EAAE,EAAE,WAAW,EAAE,aAAa,EAAE,CAAC,CAAC;YACtD,MAAM,eAAK,CAAC,IAAI,CAAC,CAAC;YAElB,OAAO,CAAC,GAAG,CAAC,kDAAkD,CAAC,CAAC;YAChE,4BAAkB,CAAC,eAAe,CAAC,CAAC;YACpC,MAAM,eAAK,CAAC,IAAI,CAAC,CAAC;YAClB,MAAM,GAAG,GAAG,yBAAe,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;YACtC,aAAM,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,OAAO,CAAC,oBAAoB,CAAC,CAAC;YAE7C,OAAO,CAAC,GAAG,CAAC,kDAAkD,CAAC,CAAC;YAChE,4BAAkB,CAAC,eAAe,CAAC,CAAC;YACpC,MAAM,eAAK,CAAC,IAAI,CAAC,CAAC;YAClB,MAAM,IAAI,GAAG,yBAAe,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC;YACvC,aAAM,CAAC,IAAI,CAAC,CAAC,EAAE,CAAC,OAAO,CAAC,oBAAoB,CAAC,CAAC;SAC/C;QAAC,OAAO,KAAK,EAAE;YACd,aAAM,CAAC,IAAI,CAAC,KAAK,CAAC,OAAO,CAAC,CAAC;SAC5B;IACH,CAAC,CAAC,CAAC;AACL,CAAC,CAAC,CAAC"}
\ No newline at end of file