更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/@bcoe/v8-coverage/.editorconfig

@@ -0,0 +1,9 @@
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 2
+insert_final_newline = true
+trim_trailing_whitespace = true

frontend/node_modules/@bcoe/v8-coverage/.gitattributes

@@ -0,0 +1,2 @@
+# Enforce `lf` for text files (even on Windows)
+text eol=lf

frontend/node_modules/@bcoe/v8-coverage/CHANGELOG.md

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+## Next
+
+- **[Breaking change]** Replace `OutModules` enum by custom compiler option `mjsModule`.
+- **[Breaking change]** Drop support for Pug, Sass, Angular & Webpack.
+- **[Feature]** Expose custom registries for each target.
+- **[Feature]** Add `dist.tscOptions` for `lib` target to override options for
+  distribution builds.
+- **[Feature]** Native ESM tests with mocha.
+- **[Fix]** Disable deprecated TsLint rules from the default config
+- **[Fix]** Remove use of experimental `fs/promises` module.
+- **[Internal]** Fix continuous deployment script (stop confusing PRs to master
+  with push to master)
+- **[Internal]** Update dependencies
+- **[Internal]** Fix deprecated Mocha types.
+
+## 0.17.1 (2017-05-03)
+
+- **[Fix]** Update dependencies, remove `std/esm` warning.
+
+## 0.17.0 (2017-04-22)
+
+- **[Breaking change]** Update dependencies. Use `esm` instead of `@std/esm`, update Typescript to `2.8.3`.
+- **[Fix]** Fix Node processes spawn on Windows (Mocha, Nyc)
+
+## 0.16.2 (2017-02-07)
+
+- **[Fix]** Fix Typedoc generation: use `tsconfig.json` generated for the lib.
+- **[Fix]** Write source map for `.mjs` files
+- **[Fix]** Copy sources to `_src` when publishing a lib (#87).
+- **[Internal]** Restore continuous deployment of documentation.
+
+## 0.16.1 (2017-01-20)
+
+- **[Feature]** Support `mocha` tests on `.mjs` files (using `@std/esm`). Enabled by default
+  if `outModules` is configured to emit `.mjs`. **You currently need to add
+  `"@std/esm": {"esm": "cjs"}` to your `package.json`.**
+
+## 0.16.0 (2017-01-09)
+
+- **[Breaking change]** Enable `allowSyntheticDefaultImports` and `esModuleInterop` by default
+- **[Fix]** Allow deep module imports in default Tslint rules
+- **[Fix]** Drop dependency on deprecated `gulp-util`
+- **[Internal]** Replace most custom typings by types from `@types`
+
+## 0.15.8 (2017-12-05)
+
+- **[Fix]** Exit with non-zero code if command tested with coverage fails
+- **[Fix]** Solve duplicated error message when using the `run` mocha task.
+- **[Fix]** Exit with non-zero code when building scripts fails.
+
+## 0.15.7 (2017-11-29)
+
+- **[Feature]** Add `coverage` task to `mocha` target, use it for the default task
+
+## 0.15.6 (2017-11-29)
+
+- **[Fix]** Fix path to source in source maps.
+- **[Fix]** Disable `number-literal-format` in default Tslint rules. It enforced uppercase for hex.
+- **[Internal]** Enable integration with Greenkeeper.
+- **[Internal]** Enable integration with Codecov
+- **[Internal]** Enable code coverage
+
+## 0.15.5 (2017-11-10)
+
+- **[Feature]** Enable the following TsLint rules: `no-duplicate-switch-case`, `no-implicit-dependencies`,
+  `no-return-await`
+- **[Internal]** Update self-dependency `0.15.4`, this restores the README on _npm_
+- **[Internal]** Add homepage and author fields to package.json
+
+## 0.15.4 (2017-11-10)
+
+- **[Fix]** Add support for custom additional copy for distribution builds. [#49](https://github.com/demurgos/turbo-gulp/issues/49)
+- **[Internal]** Update self-dependency to `turbo-gulp`
+- **[Internal]** Add link to license in `README.md`
+
+## 0.15.3 (2017-11-09)
+
+**Rename to `turbo-gulp`**. This package was previously named `demurgos-web-build-tools`.
+This version is fully compatible: you can just change the name of your dependency.
+
+## 0.15.2 (2017-11-09)
+
+**The package is prepared to be renamed `turbo-gulp`.**
+This is the last version released as `demurgos-web-build-tools`.
+
+- **[Feature]** Add support for watch mode for library targets.
+- **[Fix]** Disable experimental support for `*.mjs` by default.
+- **[Fix]** Do not emit duplicate TS errors
+
+## 0.15.1 (2017-10-19)
+
+- **[Feature]** Add experimental support for `*.mjs` files
+- **[Fix]** Fix support of releases from Continuous Deployment using Travis.
+
+## 0.15.0 (2017-10-18)
+
+- **[Fix]** Add error handling for git deployment.
+- **[Internal]** Enable continuous deployment of the `master` branch.
+
+## 0.15.0-beta.11 (2017-08-29)
+
+- **[Feature]** Add `LibTarget.dist.copySrc` option to disable copy of source files to the dist directory.
+  This allows to prevent issues with missing custom typings.
+- **[Fix]** Mark `deploy` property of `LibTarget.typedoc` as optional.
+- **[Internal]** Update self-dependency to `v0.15.0-beta.10`.
+
+## 0.15.0-beta.10 (2017-08-28)
+
+- **[Breaking]** Update Tslint rules to use `tslint@5.7.0`.
+- **[Fix]** Set `allowJs` to false in default TSC options.
+- **[Fix]** Do not pipe output of git commands to stdout.
+- **[Internal]** Update self-dependency to `v0.15.0-beta.9`.
+
+## 0.15.0-beta.9 (2017-08-28)
+
+- **[Breaking]** Drop old-style `test` target.
+- **[Breaking]** Drop old-style `node` target.
+- **[Feature]** Add `mocha` target to run tests in `spec.ts` files.
+- **[Feature]** Add `node` target to build and run top-level Node applications.
+- **[Feature]** Provide `generateNodeTasks`, `generateLibTasks` and `generateMochaTasks` functions.
+  They create the tasks but do not register them. 
+- **[Fix]** Run `clean` before `dist`, if defined.
+- **[Fix]** Run `dist` before `publish`.
+
+## 0.15.0-beta.8 (2017-08-26)
+
+- **[Fix]** Remove auth token and registry options for `<lib>:dist:publish`. It is better served
+  by configuring the environment appropriately.
+
+## 0.15.0-beta.7 (2017-08-26)
+
+- **[Feature]** Add `clean` task to `lib` targets.
+- **[Fix]** Ensure that `gitHead` is defined when publishing a package to npm.
+
+## 0.15.0-beta.6 (2017-08-22)
+
+- **[Feature]** Add support for Typedoc deployment to a remote git branch (such as `gh-pages`)
+- **[Feature]** Add support for `copy` tasks in new library target.
+- **[Fix]** Resolve absolute paths when compiling scripts with custom typings.
+
+## 0.15.0-beta.5 (2017-08-14)
+
+- **[Fix]** Fix package entry for the main module.
+
+## 0.15.0-beta.4 (2017-08-14)
+
+- **[Breaking]** Drop ES5 build exposed to browsers with the `browser` field in `package.json`.
+- **[Feature]** Introduce first new-style target (`LibTarget`). it supports typedoc generation, dev builds and
+  simple distribution.
+
+## 0.15.0-beta.3 (2017-08-11)
+
+- **[Breaking]** Update default lib target to use target-specific `srcDir`.
+- **[Feature]** Allow to complete `srcDir` in target.
+- **[Feature]** Add experimental library distribution supporting deep requires.
+
+## 0.15.0-beta.2 (2017-08-10)
+
+- **[Fix]** Default to CommonJS for project tsconfig.json
+- **[Fix]** Add Typescript configuration for default project.
+- **[Internal]** Update self-dependency to `0.15.0-beta.1`.
+
+## 0.15.0-beta.1 (2017-08-09)
+
+- **[Feature]** Support typed TSLint rules.
+- **[Internal]** Update gulpfile.ts to use build tools `0.15.0-beta.0`.
+- **[Fix]** Fix regressions caused by `0.15.0-beta.0` (missing type definition).
+
+## 0.15.0-beta.0 (2017-08-09)
+
+- **[Breaking]** Expose option interfaces directly in the main module instead of the `config` namespace.
+- **[Breaking]** Rename `DEFAULT_PROJECT_OPTIONS` to `DEFAULT_PROJECT`.
+- **[Feature]** Emit project-wide `tsconfig.json`.
+- **[Internal]** Convert gulpfile to Typescript, use `ts-node` to run it.
+- **[Internal]** Update dependencies
+
+## 0.14.3 (2017-07-16)
+
+- **[Feature]** Add `:lint:fix` project task to fix some lint errors.
+
+## 0.14.2 (2017-07-10)
+
+- **[Internal]** Update dependencies: add `package-lock.json` and update `tslint`.
+
+## 0.14.1 (2017-06-17)
+
+- **[Internal]** Update dependencies.
+- **[Internal]** Drop dependency on _Bluebird_.
+- **[Internal]** Drop dependency on _typings_.
+
+## 0.14.0 (2017-05-10)
+
+- **[Breaking]** Enforce trailing commas by default for multiline objects
+- **[Feature]** Allow bump from either `master` or a branch with the same name as the tag (exampel: `v1.2.3`)
+- **[Feature]** Support TSLint 8, allow to extend the default rules
+- **[Patch]** Allow mergeable namespaces
+
+# 0.13.1
+
+- **[Patch]** Allow namespaces in the default TS-Lint config
+
+# 0.13.0
+
+- **[Breaking]** Major overhaul of the angular target. The server build no longer depends on the client.
+- **[Breaking]** Update to `gulp@4` (from `gulp@3`)
+- **[Breaking]** Update to `tslint@7` (from `tslint@6`), add stricter default rules
+- **[Breaking]** Update signature of targetGenerators and project tasks: it only uses
+  `ProjectOptions` and `Target` now, the additional options are embedded in those two objects.
+- **[Breaking]** Remove `:install`, `:instal:npm` and `:install:typings`. Use the `prepare` script in
+  your `package.json` file instead.
+- Add `:tslint.json` project task to generate configuration for `tslint`
+- Add first class support for processing of `pug` and `sass` files, similar to `copy`
+- Implement end-to-end tests
+- Enable `emitDecoratorMetadata` in default typescript options.
+- Allow configuration of `:lint` with the `tslintOptions` property of the project configuration.
+- Add `<target>:watch` tasks for incremental builds.
+
+# 0.12.3
+
+- Support `templateUrl` and `styleUrls` in angular modules.
+
+# 0.12.2
+
+- Add `<target>:build:copy` task. It copies user-defined files.
+
+# 0.12.1
+
+- Fix `<target>:watch` task.
+
+# 0.12.0
+
+- **[Breaking]**: Change naming convention for tasks. The names primary part is
+  the target, then the action (`lib:build` instead of `build:lib`) to group
+  the tasks per target.
+- **[Breaking]**: Use `typeRoots` instead of `definitions` in configuration to
+  specify Typescript definition files.
+- Generate `tsconfig.json` file (mainly for editors)
+- Implement the `test` target to run unit-tests with `mocha`.
+
+# 0.11.2
+
+- Target `angular`: Add `build:<target>:assets:sass` for `.scss` files (Sassy CSS)
+
+# 0.11.1
+
+- Rename project to `web-build-tools` (`demurgos-web-build-tools` on _npm_)
+- Target `angular`: Add `build:<target>:assets`, `build:<target>:pug` and `build:<target>:static`.
+- Update `gulp-typescript`: solve error message during compilation
+- Targets `node` and `angular`: `build:<target>:scripts` now include in-lined source maps
+- Target `node`: `watch:<target>` to support incremental builds

frontend/node_modules/@bcoe/v8-coverage/LICENSE.md

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright © 2015-2017 Charles Samborski
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

frontend/node_modules/@bcoe/v8-coverage/LICENSE.txt

@@ -0,0 +1,14 @@
+Copyright (c) 2017, Contributors
+
+Permission to use, copy, modify, and/or distribute this software
+for any purpose with or without fee is hereby granted, provided
+that the above copyright notice and this permission notice
+appear in all copies.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
+OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE
+LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES
+OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

frontend/node_modules/@bcoe/v8-coverage/README.md

@@ -0,0 +1,11 @@
+# V8 Coverage
+
+[![npm](https://img.shields.io/npm/v/@c88/v8-coverage.svg?maxAge=2592000)](https://www.npmjs.com/package/@c88/v8-coverage)
+[![GitHub repository](https://img.shields.io/badge/Github-demurgos%2Fv8--coverage-blue.svg)](https://github.com/demurgos/v8-coverage)
+[![Build status (Travis)](https://img.shields.io/travis/demurgos/v8-coverage/master.svg?maxAge=2592000)](https://travis-ci.org/demurgos/v8-coverage)
+[![Build status (AppVeyor)](https://ci.appveyor.com/api/projects/status/qgcbdffyb9e09d0e?svg=true)](https://ci.appveyor.com/project/demurgos/v8-coverage)
+[![Codecov](https://codecov.io/gh/demurgos/v8-coverage/branch/master/graph/badge.svg)](https://codecov.io/gh/demurgos/v8-coverage)
+
+## License
+
+[MIT License](./LICENSE.md)

frontend/node_modules/@bcoe/v8-coverage/gulpfile.ts

@@ -0,0 +1,95 @@
+import * as buildTools from "turbo-gulp";
+import { LibTarget, registerLibTasks } from "turbo-gulp/targets/lib";
+import { MochaTarget, registerMochaTasks } from "turbo-gulp/targets/mocha";
+
+import gulp from "gulp";
+import minimist from "minimist";
+
+interface Options {
+  devDist?: string;
+}
+
+const options: Options & minimist.ParsedArgs = minimist(process.argv.slice(2), {
+  string: ["devDist"],
+  default: {devDist: undefined},
+  alias: {devDist: "dev-dist"},
+});
+
+const project: buildTools.Project = {
+  root: __dirname,
+  packageJson: "package.json",
+  buildDir: "build",
+  distDir: "dist",
+  srcDir: "src",
+  typescript: {}
+};
+
+const lib: LibTarget = {
+  project,
+  name: "lib",
+  srcDir: "src/lib",
+  scripts: ["**/*.ts"],
+  mainModule: "index",
+  dist: {
+    packageJsonMap: (old: buildTools.PackageJson): buildTools.PackageJson => {
+      const version: string = options.devDist !== undefined ? `${old.version}-build.${options.devDist}` : old.version;
+      return <any> {...old, version, scripts: undefined, private: false};
+    },
+    npmPublish: {
+      tag: options.devDist !== undefined ? "next" : "latest",
+    },
+  },
+  tscOptions: {
+    declaration: true,
+    skipLibCheck: true,
+  },
+  typedoc: {
+    dir: "typedoc",
+    name: "Helpers for V8 coverage files",
+    deploy: {
+      repository: "git@github.com:demurgos/v8-coverage.git",
+      branch: "gh-pages",
+    },
+  },
+  copy: [
+    {
+      files: ["**/*.json"],
+    },
+  ],
+  clean: {
+    dirs: ["build/lib", "dist/lib"],
+  },
+};
+
+const test: MochaTarget = {
+  project,
+  name: "test",
+  srcDir: "src",
+  scripts: ["test/**/*.ts", "lib/**/*.ts", "e2e/*/*.ts"],
+  customTypingsDir: "src/custom-typings",
+  tscOptions: {
+    allowSyntheticDefaultImports: true,
+    esModuleInterop: true,
+    skipLibCheck: true,
+  },
+  // generateTestMain: true,
+  copy: [
+    {
+      src: "e2e",
+      // <project-name>/(project|test-resources)/<any>
+      files: ["*/project/**/*", "*/test-resources/**/*"],
+      dest: "e2e",
+    },
+  ],
+  clean: {
+    dirs: ["build/test"],
+  },
+};
+
+const libTasks: any = registerLibTasks(gulp, lib);
+registerMochaTasks(gulp, test);
+buildTools.projectTasks.registerAll(gulp, project);
+
+gulp.task("all:tsconfig.json", gulp.parallel("lib:tsconfig.json", "test:tsconfig.json"));
+gulp.task("dist", libTasks.dist);
+gulp.task("default", libTasks.dist);

frontend/node_modules/@bcoe/v8-coverage/package.json

@@ -0,0 +1,48 @@
+{
+  "name": "@bcoe/v8-coverage",
+  "version": "0.2.3",
+  "description": "Helper functions for V8 coverage files.",
+  "author": "Charles Samborski <demurgos@demurgos.net> (https://demurgos.net)",
+  "license": "MIT",
+  "main": "dist/lib/index",
+  "types": "dist/lib/index.d.ts",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/demurgos/v8-coverage.git"
+  },
+  "homepage": "https://demurgos.github.io/v8-coverage",
+  "scripts": {
+    "prepare": "gulp all:tsconfig.json && gulp dist",
+    "pretest": "gulp lib:build",
+    "test": "gulp test",
+    "lint": "gulp :lint:fix"
+  },
+  "devDependencies": {
+    "@types/chai": "^4.1.4",
+    "@types/gulp": "^4.0.5",
+    "@types/minimist": "^1.2.0",
+    "@types/mocha": "^5.2.2",
+    "@types/node": "^10.5.4",
+    "chai": "^4.1.2",
+    "codecov": "^3.0.2",
+    "gulp": "^4.0.0",
+    "gulp-cli": "^2.0.1",
+    "minimist": "^1.2.0",
+    "pre-commit": "^1.2.2",
+    "ts-node": "^8.3.0",
+    "turbo-gulp": "^0.20.1"
+  },
+  "nyc": {
+    "include": [
+      "build/test/lib/**/*.js",
+      "build/test/lib/**/*.mjs"
+    ],
+    "reporter": [
+      "text",
+      "html"
+    ],
+    "extension": [
+      ".mjs"
+    ]
+  }
+}

frontend/node_modules/@bcoe/v8-coverage/src/test/merge.spec.ts

@@ -0,0 +1,280 @@
+import chai from "chai";
+import fs from "fs";
+import path from "path";
+import { FunctionCov, mergeFunctionCovs, mergeProcessCovs, mergeScriptCovs, ProcessCov, ScriptCov } from "../lib";
+
+const REPO_ROOT: string = path.join(__dirname, "..", "..", "..", "..");
+const BENCHES_INPUT_DIR: string = path.join(REPO_ROOT, "benches");
+const BENCHES_DIR: string = path.join(REPO_ROOT, "test-data", "merge", "benches");
+const RANGES_DIR: string = path.join(REPO_ROOT, "test-data", "merge", "ranges");
+const BENCHES_TIMEOUT: number = 20000; // 20sec
+
+interface MergeRangeItem {
+  name: string;
+  status: "run" | "skip" | "only";
+  inputs: ProcessCov[];
+  expected: ProcessCov;
+}
+
+const FIXTURES_DIR: string = path.join(REPO_ROOT, "test-data", "bugs");
+function loadFixture(name: string) {
+  const content: string = fs.readFileSync(
+    path.resolve(FIXTURES_DIR, `${name}.json`),
+    {encoding: "UTF-8"},
+  );
+  return JSON.parse(content);
+}
+
+describe("merge", () => {
+  describe("Various", () => {
+    it("accepts empty arrays for `mergeProcessCovs`", () => {
+      const inputs: ProcessCov[] = [];
+      const expected: ProcessCov = {result: []};
+      const actual: ProcessCov = mergeProcessCovs(inputs);
+      chai.assert.deepEqual(actual, expected);
+    });
+
+    it("accepts empty arrays for `mergeScriptCovs`", () => {
+      const inputs: ScriptCov[] = [];
+      const expected: ScriptCov | undefined = undefined;
+      const actual: ScriptCov | undefined = mergeScriptCovs(inputs);
+      chai.assert.deepEqual(actual, expected);
+    });
+
+    it("accepts empty arrays for `mergeFunctionCovs`", () => {
+      const inputs: FunctionCov[] = [];
+      const expected: FunctionCov | undefined = undefined;
+      const actual: FunctionCov | undefined = mergeFunctionCovs(inputs);
+      chai.assert.deepEqual(actual, expected);
+    });
+
+    it("accepts arrays with a single item for `mergeProcessCovs`", () => {
+      const inputs: ProcessCov[] = [
+        {
+          result: [
+            {
+              scriptId: "123",
+              url: "/lib.js",
+              functions: [
+                {
+                  functionName: "test",
+                  isBlockCoverage: true,
+                  ranges: [
+                    {startOffset: 0, endOffset: 4, count: 2},
+                    {startOffset: 1, endOffset: 2, count: 1},
+                    {startOffset: 2, endOffset: 3, count: 1},
+                  ],
+                },
+              ],
+            },
+          ],
+        },
+      ];
+      const expected: ProcessCov = {
+        result: [
+          {
+            scriptId: "0",
+            url: "/lib.js",
+            functions: [
+              {
+                functionName: "test",
+                isBlockCoverage: true,
+                ranges: [
+                  {startOffset: 0, endOffset: 4, count: 2},
+                  {startOffset: 1, endOffset: 3, count: 1},
+                ],
+              },
+            ],
+          },
+        ],
+      };
+      const actual: ProcessCov = mergeProcessCovs(inputs);
+      chai.assert.deepEqual(actual, expected);
+    });
+
+    describe("mergeProcessCovs", () => {
+      // see: https://github.com/demurgos/v8-coverage/issues/2
+      it("handles function coverage merged into block coverage", () => {
+        const blockCoverage: ProcessCov = loadFixture("issue-2-block-coverage");
+        const functionCoverage: ProcessCov = loadFixture("issue-2-func-coverage");
+        const inputs: ProcessCov[] = [
+          functionCoverage,
+          blockCoverage,
+        ];
+        const expected: ProcessCov = loadFixture("issue-2-expected");
+        const actual: ProcessCov = mergeProcessCovs(inputs);
+        chai.assert.deepEqual(actual, expected);
+      });
+
+      // see: https://github.com/demurgos/v8-coverage/issues/2
+      it("handles block coverage merged into function coverage", () => {
+        const blockCoverage: ProcessCov = loadFixture("issue-2-block-coverage");
+        const functionCoverage: ProcessCov = loadFixture("issue-2-func-coverage");
+        const inputs: ProcessCov[] = [
+          blockCoverage,
+          functionCoverage,
+        ];
+        const expected: ProcessCov = loadFixture("issue-2-expected");
+        const actual: ProcessCov = mergeProcessCovs(inputs);
+        chai.assert.deepEqual(actual, expected);
+      });
+    });
+
+    it("accepts arrays with a single item for `mergeScriptCovs`", () => {
+      const inputs: ScriptCov[] = [
+        {
+          scriptId: "123",
+          url: "/lib.js",
+          functions: [
+            {
+              functionName: "test",
+              isBlockCoverage: true,
+              ranges: [
+                {startOffset: 0, endOffset: 4, count: 2},
+                {startOffset: 1, endOffset: 2, count: 1},
+                {startOffset: 2, endOffset: 3, count: 1},
+              ],
+            },
+          ],
+        },
+      ];
+      const expected: ScriptCov | undefined = {
+        scriptId: "123",
+        url: "/lib.js",
+        functions: [
+          {
+            functionName: "test",
+            isBlockCoverage: true,
+            ranges: [
+              {startOffset: 0, endOffset: 4, count: 2},
+              {startOffset: 1, endOffset: 3, count: 1},
+            ],
+          },
+        ],
+      };
+      const actual: ScriptCov | undefined = mergeScriptCovs(inputs);
+      chai.assert.deepEqual(actual, expected);
+    });
+
+    it("accepts arrays with a single item for `mergeFunctionCovs`", () => {
+      const inputs: FunctionCov[] = [
+        {
+          functionName: "test",
+          isBlockCoverage: true,
+          ranges: [
+            {startOffset: 0, endOffset: 4, count: 2},
+            {startOffset: 1, endOffset: 2, count: 1},
+            {startOffset: 2, endOffset: 3, count: 1},
+          ],
+        },
+      ];
+      const expected: FunctionCov = {
+        functionName: "test",
+        isBlockCoverage: true,
+        ranges: [
+          {startOffset: 0, endOffset: 4, count: 2},
+          {startOffset: 1, endOffset: 3, count: 1},
+        ],
+      };
+      const actual: FunctionCov | undefined = mergeFunctionCovs(inputs);
+      chai.assert.deepEqual(actual, expected);
+    });
+  });
+
+  describe("ranges", () => {
+    for (const sourceFile of getSourceFiles()) {
+      const relPath: string = path.relative(RANGES_DIR, sourceFile);
+      describe(relPath, () => {
+        const content: string = fs.readFileSync(sourceFile, {encoding: "UTF-8"});
+        const items: MergeRangeItem[] = JSON.parse(content);
+        for (const item of items) {
+          const test: () => void = () => {
+            const actual: ProcessCov | undefined = mergeProcessCovs(item.inputs);
+            chai.assert.deepEqual(actual, item.expected);
+          };
+          switch (item.status) {
+            case "run":
+              it(item.name, test);
+              break;
+            case "only":
+              it.only(item.name, test);
+              break;
+            case "skip":
+              it.skip(item.name, test);
+              break;
+            default:
+              throw new Error(`Unexpected status: ${item.status}`);
+          }
+        }
+      });
+    }
+  });
+
+  describe("benches", () => {
+    for (const bench of getBenches()) {
+      const BENCHES_TO_SKIP: Set<string> = new Set();
+      if (process.env.CI === "true") {
+        // Skip very large benchmarks when running continuous integration
+        BENCHES_TO_SKIP.add("node@10.11.0");
+        BENCHES_TO_SKIP.add("npm@6.4.1");
+      }
+
+      const name: string = path.basename(bench);
+
+      if (BENCHES_TO_SKIP.has(name)) {
+        it.skip(`${name} (skipped: too large for CI)`, testBench);
+      } else {
+        it(name, testBench);
+      }
+
+      async function testBench(this: Mocha.Context) {
+        this.timeout(BENCHES_TIMEOUT);
+
+        const inputFileNames: string[] = await fs.promises.readdir(bench);
+        const inputPromises: Promise<ProcessCov>[] = [];
+        for (const inputFileName of inputFileNames) {
+          const resolved: string = path.join(bench, inputFileName);
+          inputPromises.push(fs.promises.readFile(resolved).then(buffer => JSON.parse(buffer.toString("UTF-8"))));
+        }
+        const inputs: ProcessCov[] = await Promise.all(inputPromises);
+        const expectedPath: string = path.join(BENCHES_DIR, `${name}.json`);
+        const expectedContent: string = await fs.promises.readFile(expectedPath, {encoding: "UTF-8"}) as string;
+        const expected: ProcessCov = JSON.parse(expectedContent);
+        const startTime: number = Date.now();
+        const actual: ProcessCov | undefined = mergeProcessCovs(inputs);
+        const endTime: number = Date.now();
+        console.error(`Time (${name}): ${(endTime - startTime) / 1000}`);
+        chai.assert.deepEqual(actual, expected);
+        console.error(`OK: ${name}`);
+      }
+    }
+  });
+});
+
+function getSourceFiles() {
+  return getSourcesFrom(RANGES_DIR);
+
+  function* getSourcesFrom(dir: string): Iterable<string> {
+    const names: string[] = fs.readdirSync(dir);
+    for (const name of names) {
+      const resolved: string = path.join(dir, name);
+      const stat: fs.Stats = fs.statSync(resolved);
+      if (stat.isDirectory()) {
+        yield* getSourcesFrom(dir);
+      } else {
+        yield resolved;
+      }
+    }
+  }
+}
+
+function* getBenches(): Iterable<string> {
+  const names: string[] = fs.readdirSync(BENCHES_INPUT_DIR);
+  for (const name of names) {
+    const resolved: string = path.join(BENCHES_INPUT_DIR, name);
+    const stat: fs.Stats = fs.statSync(resolved);
+    if (stat.isDirectory()) {
+      yield resolved;
+    }
+  }
+}

frontend/node_modules/@bcoe/v8-coverage/tsconfig.json

@@ -0,0 +1,59 @@
+{
+  "compilerOptions": {
+    "allowJs": false,
+    "allowSyntheticDefaultImports": true,
+    "allowUnreachableCode": false,
+    "allowUnusedLabels": false,
+    "alwaysStrict": true,
+    "charset": "utf8",
+    "checkJs": false,
+    "declaration": false,
+    "disableSizeLimit": false,
+    "downlevelIteration": false,
+    "emitBOM": false,
+    "emitDecoratorMetadata": true,
+    "esModuleInterop": true,
+    "experimentalDecorators": true,
+    "forceConsistentCasingInFileNames": true,
+    "importHelpers": false,
+    "inlineSourceMap": false,
+    "inlineSources": false,
+    "isolatedModules": false,
+    "lib": [
+      "es2017",
+      "esnext.asynciterable"
+    ],
+    "locale": "en-us",
+    "module": "commonjs",
+    "moduleResolution": "node",
+    "newLine": "lf",
+    "noEmit": false,
+    "noEmitHelpers": false,
+    "noEmitOnError": true,
+    "noErrorTruncation": true,
+    "noFallthroughCasesInSwitch": true,
+    "noImplicitAny": true,
+    "noImplicitReturns": true,
+    "noImplicitThis": true,
+    "noStrictGenericChecks": false,
+    "noUnusedLocals": true,
+    "noUnusedParameters": false,
+    "noImplicitUseStrict": false,
+    "noLib": false,
+    "noResolve": false,
+    "preserveConstEnums": false,
+    "removeComments": false,
+    "skipLibCheck": true,
+    "sourceMap": true,
+    "strict": true,
+    "strictNullChecks": true,
+    "suppressExcessPropertyErrors": false,
+    "suppressImplicitAnyIndexErrors": false,
+    "target": "es2017",
+    "traceResolution": false,
+    "typeRoots": [
+      "src/lib/custom-typings",
+      "node_modules/@types"
+    ]
+  }
+}