diff --git a/.gitignore b/.gitignore
index 2a1ccad..da8ebd8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -85,4 +85,5 @@ typings/
 
 # End of https://www.gitignore.io/api/node
 
-dist/
\ No newline at end of file
+dist/
+lib/
diff --git a/README.md b/README.md
index 199b466..c174a32 100644
--- a/README.md
+++ b/README.md
@@ -38,6 +38,7 @@ LeetCode 中国的前端团队工作内容:
 
 #### 展现你的能力
 
+- [基础编程能力](./fondations_zh.md)
 - [编写复杂的 TypeScript 类型](./typescript_zh.md)
 - [用 Webpack 实现 predictable long term cache](./webpack_zh.md)
 - [编写工程化的组件](./engineering_zh.md)
diff --git a/fondations-zh/package.json b/fondations-zh/package.json
new file mode 100644
index 0000000..26e793f
--- /dev/null
+++ b/fondations-zh/package.json
@@ -0,0 +1,19 @@
+{
+  "name": "@leetcode-hire/fondations-zh",
+  "version": "1.0.0",
+  "description": "Frontend fondation problem for leetcode-cn.com",
+  "main": "lib/index.js",
+  "repository": "https://github.com/LeetCode-OpenSource/hire",
+  "author": "lynweklm@gmail.com",
+  "license": "MIT",
+  "scripts": {
+    "build": "shx rm -rf lib && tsc -p tsconfig.json --outDir lib"
+  },
+  "devDependencies": {
+    "shx": "^0.3.2",
+    "typescript": "^3.6.2"
+  },
+  "dependencies": {
+    "tslib": "^1.10.0"
+  }
+}
diff --git a/fondations-zh/src/index.ts b/fondations-zh/src/index.ts
new file mode 100644
index 0000000..766f2b4
--- /dev/null
+++ b/fondations-zh/src/index.ts
@@ -0,0 +1,12 @@
+export interface ErrorMessage {
+  message: string
+  stack: Array<{
+    line: number
+    column: number
+    filename: string
+  }>
+}
+
+export function parseError(err: Error): ErrorMessage {
+  // implement
+}
diff --git a/fondations-zh/tsconfig.json b/fondations-zh/tsconfig.json
new file mode 100644
index 0000000..bb5c37b
--- /dev/null
+++ b/fondations-zh/tsconfig.json
@@ -0,0 +1,12 @@
+{
+  "compilerOptions": {
+    "strict": true,
+    "moduleResolution": "node",
+    "target": "esnext",
+    "module": "esnext",
+    "noUnusedLocals": true,
+    "noUnusedParameters": true,
+    "importHelpers": true,
+    "noEmitHelpers": true
+  }
+}
diff --git a/fondations-zh/yarn.lock b/fondations-zh/yarn.lock
new file mode 100644
index 0000000..d8319e1
--- /dev/null
+++ b/fondations-zh/yarn.lock
@@ -0,0 +1,137 @@
+# THIS IS AN AUTOGENERATED FILE. DO NOT EDIT THIS FILE DIRECTLY.
+# yarn lockfile v1
+
+
+balanced-match@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/balanced-match/-/balanced-match-1.0.0.tgz#89b4d199ab2bee49de164ea02b89ce462d71b767"
+  integrity sha1-ibTRmasr7kneFk6gK4nORi1xt2c=
+
+brace-expansion@^1.1.7:
+  version "1.1.11"
+  resolved "https://registry.yarnpkg.com/brace-expansion/-/brace-expansion-1.1.11.tgz#3c7fcbf529d87226f3d2f52b966ff5271eb441dd"
+  integrity sha512-iCuPHDFgrHX7H2vEI/5xpz07zSHB00TpugqhmYtVmMO6518mCuRMoOYFldEBl0g187ufozdaHgWKcYFb61qGiA==
+  dependencies:
+    balanced-match "^1.0.0"
+    concat-map "0.0.1"
+
+concat-map@0.0.1:
+  version "0.0.1"
+  resolved "https://registry.yarnpkg.com/concat-map/-/concat-map-0.0.1.tgz#d8a96bd77fd68df7793a73036a3ba0d5405d477b"
+  integrity sha1-2Klr13/Wjfd5OnMDajug1UBdR3s=
+
+es6-object-assign@^1.0.3:
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/es6-object-assign/-/es6-object-assign-1.1.0.tgz#c2c3582656247c39ea107cb1e6652b6f9f24523c"
+  integrity sha1-wsNYJlYkfDnqEHyx5mUrb58kUjw=
+
+fs.realpath@^1.0.0:
+  version "1.0.0"
+  resolved "https://registry.yarnpkg.com/fs.realpath/-/fs.realpath-1.0.0.tgz#1504ad2523158caa40db4a2787cb01411994ea4f"
+  integrity sha1-FQStJSMVjKpA20onh8sBQRmU6k8=
+
+glob@^7.0.0:
+  version "7.1.4"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.4.tgz#aa608a2f6c577ad357e1ae5a5c26d9a8d1969255"
+  integrity sha512-hkLPepehmnKk41pUGm3sYxoFs/umurYfYJCerbXEyFIWcAzvpipAgVkBqqT9RBKMGjnq6kMuyYwha6csxbiM1A==
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+inflight@^1.0.4:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/inflight/-/inflight-1.0.6.tgz#49bd6331d7d02d0c09bc910a1075ba8165b56df9"
+  integrity sha1-Sb1jMdfQLQwJvJEKEHW6gWW1bfk=
+  dependencies:
+    once "^1.3.0"
+    wrappy "1"
+
+inherits@2:
+  version "2.0.4"
+  resolved "https://registry.yarnpkg.com/inherits/-/inherits-2.0.4.tgz#0fa2c64f932917c3433a0ded55363aae37416b7c"
+  integrity sha512-k/vGaX4/Yla3WzyMCvTQOXYeIHvqOKtnqBduzTHpzpQZzAskKMhZ2K+EnBiSM9zGSoIFeMpXKxa4dYeZIQqewQ==
+
+interpret@^1.0.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/interpret/-/interpret-1.2.0.tgz#d5061a6224be58e8083985f5014d844359576296"
+  integrity sha512-mT34yGKMNceBQUoVn7iCDKDntA7SC6gycMAWzGx1z/CMCTV7b2AAtXlo3nRyHZ1FelRkQbQjprHSYGwzLtkVbw==
+
+minimatch@^3.0.4:
+  version "3.0.4"
+  resolved "https://registry.yarnpkg.com/minimatch/-/minimatch-3.0.4.tgz#5166e286457f03306064be5497e8dbb0c3d32083"
+  integrity sha512-yJHVQEhyqPLUTgt9B83PXu6W3rx4MvvHvSUvToogpwoGDOUQ+yDrR0HRot+yOCdCO7u4hX3pWft6kWBBcqh0UA==
+  dependencies:
+    brace-expansion "^1.1.7"
+
+minimist@^1.2.0:
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/minimist/-/minimist-1.2.0.tgz#a35008b20f41383eec1fb914f4cd5df79a264284"
+  integrity sha1-o1AIsg9BOD7sH7kU9M1d95omQoQ=
+
+once@^1.3.0:
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/once/-/once-1.4.0.tgz#583b1aa775961d4b113ac17d9c50baef9dd76bd1"
+  integrity sha1-WDsap3WWHUsROsF9nFC6753Xa9E=
+  dependencies:
+    wrappy "1"
+
+path-is-absolute@^1.0.0:
+  version "1.0.1"
+  resolved "https://registry.yarnpkg.com/path-is-absolute/-/path-is-absolute-1.0.1.tgz#174b9268735534ffbc7ace6bf53a5a9e1b5c5f5f"
+  integrity sha1-F0uSaHNVNP+8es5r9TpanhtcX18=
+
+path-parse@^1.0.6:
+  version "1.0.6"
+  resolved "https://registry.yarnpkg.com/path-parse/-/path-parse-1.0.6.tgz#d62dbb5679405d72c4737ec58600e9ddcf06d24c"
+  integrity sha512-GSmOT2EbHrINBf9SR7CDELwlJ8AENk3Qn7OikK4nFYAu3Ote2+JYNVvkpAEQm3/TLNEJFD/xZJjzyxg3KBWOzw==
+
+rechoir@^0.6.2:
+  version "0.6.2"
+  resolved "https://registry.yarnpkg.com/rechoir/-/rechoir-0.6.2.tgz#85204b54dba82d5742e28c96756ef43af50e3384"
+  integrity sha1-hSBLVNuoLVdC4oyWdW70OvUOM4Q=
+  dependencies:
+    resolve "^1.1.6"
+
+resolve@^1.1.6:
+  version "1.12.0"
+  resolved "https://registry.yarnpkg.com/resolve/-/resolve-1.12.0.tgz#3fc644a35c84a48554609ff26ec52b66fa577df6"
+  integrity sha512-B/dOmuoAik5bKcD6s6nXDCjzUKnaDvdkRyAk6rsmsKLipWj4797iothd7jmmUhWTfinVMU+wc56rYKsit2Qy4w==
+  dependencies:
+    path-parse "^1.0.6"
+
+shelljs@^0.8.1:
+  version "0.8.3"
+  resolved "https://registry.yarnpkg.com/shelljs/-/shelljs-0.8.3.tgz#a7f3319520ebf09ee81275b2368adb286659b097"
+  integrity sha512-fc0BKlAWiLpwZljmOvAOTE/gXawtCoNrP5oaY7KIaQbbyHeQVg01pSEuEGvGh3HEdBU4baCD7wQBwADmM/7f7A==
+  dependencies:
+    glob "^7.0.0"
+    interpret "^1.0.0"
+    rechoir "^0.6.2"
+
+shx@^0.3.2:
+  version "0.3.2"
+  resolved "https://registry.yarnpkg.com/shx/-/shx-0.3.2.tgz#40501ce14eb5e0cbcac7ddbd4b325563aad8c123"
+  integrity sha512-aS0mWtW3T2sHAenrSrip2XGv39O9dXIFUqxAEWHEOS1ePtGIBavdPJY1kE2IHl14V/4iCbUiNDPGdyYTtmhSoA==
+  dependencies:
+    es6-object-assign "^1.0.3"
+    minimist "^1.2.0"
+    shelljs "^0.8.1"
+
+tslib@^1.10.0:
+  version "1.10.0"
+  resolved "https://registry.yarnpkg.com/tslib/-/tslib-1.10.0.tgz#c3c19f95973fb0a62973fb09d90d961ee43e5c8a"
+  integrity sha512-qOebF53frne81cf0S9B41ByenJ3/IuH8yJKngAX35CmiZySA0khhkovshKK+jGCaMnVomla7gVlIcc3EvKPbTQ==
+
+typescript@^3.6.2:
+  version "3.6.2"
+  resolved "https://registry.yarnpkg.com/typescript/-/typescript-3.6.2.tgz#105b0f1934119dde543ac8eb71af3a91009efe54"
+  integrity sha512-lmQ4L+J6mnu3xweP8+rOrUwzmN+MRAj7TgtJtDaXE5PMyX2kCrklhg3rvOsOIfNeAWMQWO2F1GPc1kMD2vLAfw==
+
+wrappy@1:
+  version "1.0.2"
+  resolved "https://registry.yarnpkg.com/wrappy/-/wrappy-1.0.2.tgz#b5243d8f3ec1aa35f1364605bc0d1036e30ab69f"
+  integrity sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=
diff --git a/fondations_zh.md b/fondations_zh.md
new file mode 100644
index 0000000..71358b0
--- /dev/null
+++ b/fondations_zh.md
@@ -0,0 +1,81 @@
+# 运用你的编程能力解决现实问题
+
+## 问题描述
+假设我们在业务中有一个需求是将浏览器中的错误上报到日志中心。
+在上报前，我们需要在前端先将错误的各种信息序列化为日志中心可以处理的 `JSON` 形式。
+
+## 输入
+输入是一个 `Error` 对象，但是在不同的浏览器下它有着细微的区别。
+
+在 `Chrome` 中，我们捕获到的错误的 `stack` 属性是以下格式:
+
+```js
+const fixtureStack = `TypeError: Error raised
+  at bar http://192.168.31.8:8000/c.js:2:9
+  at foo http://192.168.31.8:8000/b.js:4:15
+  at calc http://192.168.31.8:8000/a.js:4:3
+  at <anonymous>:1:11
+  at http://192.168.31.8:8000/a.js:22:3
+`
+```
+
+在 `Firefox` 中，我们捕获到的错误的 `stack` 属性是以下格式:
+
+```js
+const fixtureFirefoxStack = `
+  bar@http://192.168.31.8:8000/c.js:2:9
+  foo@http://192.168.31.8:8000/b.js:4:15
+  calc@http://192.168.31.8:8000/a.js:4:3
+  <anonymous>:1:11
+  http://192.168.31.8:8000/a.js:22:3
+`
+```
+
+如果 `stack` 中某一行不带文件路径，则忽略掉这行信息
+
+## 输出
+日志中心接受这样格式的数据:
+
+```ts
+interface ErrorMessage {
+  message: string
+  stack: Array<{
+    line: number
+    column: number
+    filename: string
+  }>
+}
+```
+
+如果输入:
+```ts
+TypeError: Error raised
+  at bar http://192.168.31.8:8000/c.js:2:9
+```
+
+则输出:
+
+```ts
+{
+  message: 'Error raised',
+  stack: [
+    {
+      line: 2,
+      column: 9,
+      filename: 'http://192.168.31.8:8000/c.js'
+    }
+  ]
+}
+```
+
+## 要求
+请使用 `TypeScript` 完成 [index.ts](./fondations-zh/src/index.ts) 中的函数.
+可以引入部分工具类第三方库，比如 `Lodash`.
+
+## 评判标准
+
+- 完成所描述功能. `50 分`
+- 完整的单元测试，覆盖 `输入` 中举例的 `Chrome` 和 `Firefox` 的两个 `Fixture`. `30 分`
+- 配置 `lint` 与 `formart`. `10 分`
+- 配置 `precommit` 与 `commitlint`. `10 分`
+- 配置 `CI`, 并且在 `CI` 上运行 `单元测试与 Lint`. `30 分`