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Diffstat (limited to 'deps/node/deps/npm/node_modules/buffer-from/index.js')
-rw-r--r--deps/node/deps/npm/node_modules/buffer-from/index.js69
1 files changed, 69 insertions, 0 deletions
diff --git a/deps/node/deps/npm/node_modules/buffer-from/index.js b/deps/node/deps/npm/node_modules/buffer-from/index.js
new file mode 100644
index 00000000..d92a83d0
--- /dev/null
+++ b/deps/node/deps/npm/node_modules/buffer-from/index.js
@@ -0,0 +1,69 @@
+var toString = Object.prototype.toString
+
+var isModern = (
+ typeof Buffer.alloc === 'function' &&
+ typeof Buffer.allocUnsafe === 'function' &&
+ typeof Buffer.from === 'function'
+)
+
+function isArrayBuffer (input) {
+ return toString.call(input).slice(8, -1) === 'ArrayBuffer'
+}
+
+function fromArrayBuffer (obj, byteOffset, length) {
+ byteOffset >>>= 0
+
+ var maxLength = obj.byteLength - byteOffset
+
+ if (maxLength < 0) {
+ throw new RangeError("'offset' is out of bounds")
+ }
+
+ if (length === undefined) {
+ length = maxLength
+ } else {
+ length >>>= 0
+
+ if (length > maxLength) {
+ throw new RangeError("'length' is out of bounds")
+ }
+ }
+
+ return isModern
+ ? Buffer.from(obj.slice(byteOffset, byteOffset + length))
+ : new Buffer(new Uint8Array(obj.slice(byteOffset, byteOffset + length)))
+}
+
+function fromString (string, encoding) {
+ if (typeof encoding !== 'string' || encoding === '') {
+ encoding = 'utf8'
+ }
+
+ if (!Buffer.isEncoding(encoding)) {
+ throw new TypeError('"encoding" must be a valid string encoding')
+ }
+
+ return isModern
+ ? Buffer.from(string, encoding)
+ : new Buffer(string, encoding)
+}
+
+function bufferFrom (value, encodingOrOffset, length) {
+ if (typeof value === 'number') {
+ throw new TypeError('"value" argument must not be a number')
+ }
+
+ if (isArrayBuffer(value)) {
+ return fromArrayBuffer(value, encodingOrOffset, length)
+ }
+
+ if (typeof value === 'string') {
+ return fromString(value, encodingOrOffset)
+ }
+
+ return isModern
+ ? Buffer.from(value)
+ : new Buffer(value)
+}
+
+module.exports = bufferFrom