更新前端静态网页获取方式，放弃使用后端获取api

frontend/node_modules/sourcemap-codec/CHANGELOG.md

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+# sourcemap-codec changelog
+
+## 1.4.8
+
+* Performance boost ([#80](https://github.com/Rich-Harris/sourcemap-codec/pull/80))
+
+## 1.4.7
+
+* Include .map files in package ([#73](https://github.com/Rich-Harris/sourcemap-codec/issues/73))
+
+## 1.4.6
+
+* Use arrays instead of typed arrays ([#79](https://github.com/Rich-Harris/sourcemap-codec/pull/79))
+
+## 1.4.5
+
+* Handle overflow cases ([#78](https://github.com/Rich-Harris/sourcemap-codec/pull/78))
+
+## 1.4.4
+
+* Use Uint32Array, yikes ([#77](https://github.com/Rich-Harris/sourcemap-codec/pull/77))
+
+## 1.4.3
+
+* Use Uint16Array to prevent overflow ([#75](https://github.com/Rich-Harris/sourcemap-codec/pull/75))
+
+## 1.4.2
+
+* GO EVEN FASTER ([#74](https://github.com/Rich-Harris/sourcemap-codec/pull/74))
+
+## 1.4.1
+
+* GO FASTER ([#71](https://github.com/Rich-Harris/sourcemap-codec/pull/71))
+
+## 1.4.0
+
+* Add TypeScript declarations ([#70](https://github.com/Rich-Harris/sourcemap-codec/pull/70))
+
+## 1.3.1
+
+* Update build process, expose `pkg.module`
+
+## 1.3.0
+
+* Update build process
+
+## 1.2.1
+
+* Add dist files to npm package
+
+## 1.2.0
+
+* Add ES6 build
+* Update dependencies
+* Add test coverage
+
+## 1.1.0
+
+* Fix bug with lines containing single-character segments
+* Add tests
+
+## 1.0.0
+
+* First release

frontend/node_modules/sourcemap-codec/LICENSE

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+The MIT License
+
+Copyright (c) 2015 Rich Harris
+
+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/sourcemap-codec/README.md

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+# sourcemap-codec
+
+Encode/decode the `mappings` property of a [sourcemap](https://docs.google.com/document/d/1U1RGAehQwRypUTovF1KRlpiOFze0b-_2gc6fAH0KY0k/edit).
+
+
+## Why?
+
+Sourcemaps are difficult to generate and manipulate, because the `mappings` property – the part that actually links the generated code back to the original source – is encoded using an obscure method called [Variable-length quantity](https://en.wikipedia.org/wiki/Variable-length_quantity). On top of that, each segment in the mapping contains offsets rather than absolute indices, which means that you can't look at a segment in isolation – you have to understand the whole sourcemap.
+
+This package makes the process slightly easier.
+
+
+## Installation
+
+```bash
+npm install sourcemap-codec
+```
+
+
+## Usage
+
+```js
+import { encode, decode } from 'sourcemap-codec';
+
+var decoded = decode( ';EAEEA,EAAE,EAAC,CAAE;ECQY,UACC' );
+
+assert.deepEqual( decoded, [
+	// the first line (of the generated code) has no mappings,
+	// as shown by the starting semi-colon (which separates lines)
+	[],
+
+	// the second line contains four (comma-separated) segments
+	[
+		// segments are encoded as you'd expect:
+		// [ generatedCodeColumn, sourceIndex, sourceCodeLine, sourceCodeColumn, nameIndex ]
+
+		// i.e. the first segment begins at column 2, and maps back to the second column
+		// of the second line (both zero-based) of the 0th source, and uses the 0th
+		// name in the `map.names` array
+		[ 2, 0, 2, 2, 0 ],
+
+		// the remaining segments are 4-length rather than 5-length,
+		// because they don't map a name
+		[ 4, 0, 2, 4 ],
+		[ 6, 0, 2, 5 ],
+		[ 7, 0, 2, 7 ]
+	],
+
+	// the final line contains two segments
+	[
+		[ 2, 1, 10, 19 ],
+		[ 12, 1, 11, 20 ]
+	]
+]);
+
+var encoded = encode( decoded );
+assert.equal( encoded, ';EAEEA,EAAE,EAAC,CAAE;ECQY,UACC' );
+```
+
+
+# License
+
+MIT

frontend/node_modules/sourcemap-codec/package.json

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+{
+  "name": "sourcemap-codec",
+  "version": "1.4.8",
+  "description": "Encode/decode sourcemap mappings",
+  "main": "dist/sourcemap-codec.umd.js",
+  "module": "dist/sourcemap-codec.es.js",
+  "types": "dist/types/sourcemap-codec.d.ts",
+  "scripts": {
+    "test": "mocha",
+    "build": "rm -rf dist && rollup -c && tsc",
+    "pretest": "npm run build",
+    "prepublish": "npm test",
+    "lint": "eslint src",
+    "pretest-coverage": "npm run build",
+    "test-coverage": "rm -rf coverage/* && istanbul cover --report json node_modules/.bin/_mocha -- -u exports -R spec test/test.js",
+    "posttest-coverage": "remap-istanbul -i coverage/coverage-final.json -o coverage/coverage-remapped.json -b dist && remap-istanbul -i coverage/coverage-final.json -o coverage/coverage-remapped.lcov -t lcovonly -b dist && remap-istanbul -i coverage/coverage-final.json -o coverage/coverage-remapped -t html -b dist",
+    "ci": "npm run test-coverage && codecov < coverage/coverage-remapped.lcov"
+  },
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/Rich-Harris/sourcemap-codec"
+  },
+  "keywords": [
+    "sourcemap",
+    "vlq"
+  ],
+  "author": "Rich Harris",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/Rich-Harris/sourcemap-codec/issues"
+  },
+  "homepage": "https://github.com/Rich-Harris/sourcemap-codec",
+  "dependencies": {},
+  "devDependencies": {
+    "codecov.io": "^0.1.6",
+    "console-group": "^0.3.3",
+    "eslint": "^6.0.1",
+    "eslint-plugin-import": "^2.18.0",
+    "istanbul": "^0.4.5",
+    "mocha": "^6.1.4",
+    "remap-istanbul": "^0.13.0",
+    "rollup": "^1.16.4",
+    "rollup-plugin-node-resolve": "^5.2.0",
+    "rollup-plugin-typescript": "^1.0.1",
+    "typescript": "^3.5.2"
+  },
+  "files": [
+    "dist/*.js",
+    "dist/*.js.map",
+    "dist/**/*.d.ts",
+    "README.md"
+  ]
+}