add hw2

node_modules/text-decoder/README.md

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+# text-decoder
+
+Streaming text decoder that preserves multibyte Unicode characters.
+
+```
+npm i text-decoder
+```
+
+## Usage
+
+``` js
+const TextDecoder = require('text-decoder')
+
+const td = new TextDecoder()
+
+td.push(Buffer.of(0xf0, 0x9f, 0x92)) // returns ''
+td.push(Buffer.of(0xa9)) // returns '💩'
+```
+
+## API
+
+#### `const td = new TextDecoder([encoding])`
+
+Create a text decoder. `encoding` defaults to `utf8`.
+
+#### `const string = td.push(data)`
+
+Push either a `Buffer` or a `string` to the text decoder. Returns the decoded string, buffering any partial data.
+
+#### `const string = td.end([data])`
+
+End the decoder, optionally pushing a final piece of data. Returns the decoded string.
+
+## License
+
+Apache-2.0