Add custom snippets

vim/UltiSnips/all.snippets

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+snippet #! "Shebang" !b
+#!/usr/bin/env ${1:bash}
+endsnippet

vim/UltiSnips/javascript.snippets

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+snippet f "function"
+function ${1:function_name} (${2:argument}) {
+	${VISUAL}$0
+}
+endsnippet
+
+snippet scf "self calling function"
+(function (${1:argument}) {
+	${VISUAL}$0
+}(${2:$1}));
+endsnippet
+
+snippet log "console.log"
+console.log(${1:"${2:value}"});
+endsnippet

vim/UltiSnips/python.snippets

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+snippet map "Map snippet"
+map(${1:lambda x: x}, ${2:[]})
+endsnippet