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update minify
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63
node_modules/uglify-js/README.md
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63
node_modules/uglify-js/README.md
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@@ -87,6 +87,7 @@ a double dash to prevent input files being used as option arguments:
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`wrap_iife` Wrap IIFEs in parenthesis. Note: you may
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want to disable `negate_iife` under
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compressor options.
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-O, --output-opts [options] Specify output options (`beautify` disabled by default).
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-o, --output <file> Output file path (default STDOUT). Specify `ast` or
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`spidermonkey` to write UglifyJS or SpiderMonkey AST
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as JSON to STDOUT respectively.
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@@ -478,42 +479,42 @@ if (result.error) throw result.error;
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## Minify options
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- `warnings` (default `false`) — pass `true` to return compressor warnings
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in `result.warnings`. Use the value `"verbose"` for more detailed warnings.
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- `parse` (default `{}`) — pass an object if you wish to specify some
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additional [parse options](#parse-options).
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- `compress` (default `{}`) — pass `false` to skip compressing entirely.
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Pass an object to specify custom [compress options](#compress-options).
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- `ie8` (default `false`) -- set to `true` to support IE8.
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- `keep_fnames` (default: `false`) -- pass `true` to prevent discarding or mangling
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of function names. Useful for code relying on `Function.prototype.name`.
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- `mangle` (default `true`) — pass `false` to skip mangling names, or pass
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an object to specify [mangle options](#mangle-options) (see below).
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- `mangle.properties` (default `false`) — a subcategory of the mangle option.
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Pass an object to specify custom [mangle property options](#mangle-properties-options).
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- `output` (default `null`) — pass an object if you wish to specify
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additional [output options](#output-options). The defaults are optimized
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for best compression.
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- `sourceMap` (default `false`) - pass an object if you wish to specify
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[source map options](#source-map-options).
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- `toplevel` (default `false`) - set to `true` if you wish to enable top level
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variable and function name mangling and to drop unused variables and functions.
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- `nameCache` (default `null`) - pass an empty object `{}` or a previously
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- `nameCache` (default `null`) -- pass an empty object `{}` or a previously
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used `nameCache` object if you wish to cache mangled variable and
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property names across multiple invocations of `minify()`. Note: this is
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a read/write property. `minify()` will read the name cache state of this
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object and update it during minification so that it may be
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reused or externally persisted by the user.
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- `ie8` (default `false`) - set to `true` to support IE8.
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- `output` (default `null`) — pass an object if you wish to specify
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additional [output options](#output-options). The defaults are optimized
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for best compression.
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- `keep_fnames` (default: `false`) - pass `true` to prevent discarding or mangling
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of function names. Useful for code relying on `Function.prototype.name`.
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- `parse` (default `{}`) — pass an object if you wish to specify some
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additional [parse options](#parse-options).
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- `sourceMap` (default `false`) -- pass an object if you wish to specify
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[source map options](#source-map-options).
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- `toplevel` (default `false`) -- set to `true` if you wish to enable top level
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variable and function name mangling and to drop unused variables and functions.
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- `warnings` (default `false`) — pass `true` to return compressor warnings
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in `result.warnings`. Use the value `"verbose"` for more detailed warnings.
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## Minify options structure
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@@ -605,6 +606,8 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
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- `arguments` (default: `true`) -- replace `arguments[index]` with function
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parameter name whenever possible.
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- `assignments` (default: `true`) -- apply optimizations to assignment expressions.
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- `booleans` (default: `true`) -- various optimizations for boolean context,
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for example `!!a ? b : c → a ? b : c`
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@@ -629,11 +632,17 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
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- `drop_debugger` (default: `true`) -- remove `debugger;` statements
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- `evaluate` (default: `true`) -- attempt to evaluate constant expressions
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- `evaluate` (default: `true`) -- Evaluate expression for shorter constant
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representation. Pass `"eager"` to always replace function calls whenever
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possible, or a positive integer to specify an upper bound for each individual
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evaluation in number of characters.
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- `expression` (default: `false`) -- Pass `true` to preserve completion values
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from terminal statements without `return`, e.g. in bookmarklets.
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- `functions` (default: `true`) -- convert declarations from `var`to `function`
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whenever possible.
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- `global_defs` (default: `{}`) -- see [conditional compilation](#conditional-compilation)
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- `hoist_funs` (default: `false`) -- hoist function declarations
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@@ -659,8 +668,9 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
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- `join_vars` (default: `true`) -- join consecutive `var` statements
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- `keep_fargs` (default: `true`) -- Prevents the compressor from discarding unused
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function arguments. You need this for code which relies on `Function.length`.
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- `keep_fargs` (default: `strict`) -- Discard unused function arguments. Code
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which relies on `Function.length` will break if this is done indiscriminately,
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i.e. when passing `true`. Pass `false` to always retain function arguments.
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- `keep_fnames` (default: `false`) -- Pass `true` to prevent the
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compressor from discarding function names. Useful for code relying on
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@@ -676,6 +686,8 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
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where the return value is discarded, to avoid the parens that the
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code generator would insert.
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- `objects` (default: `true`) -- compact duplicate keys in object literals.
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- `passes` (default: `1`) -- The maximum number of times to run compress.
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In some cases more than one pass leads to further compressed code. Keep in
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mind more passes will take more time.
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@@ -724,6 +736,8 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
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annotation `/*@__PURE__*/` or `/*#__PURE__*/` immediately precedes the call. For
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example: `/*@__PURE__*/foo();`
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- `strings` (default: `true`) -- compact string concatenations.
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- `switches` (default: `true`) -- de-duplicate and remove unreachable `switch` branches
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- `toplevel` (default: `false`) -- drop unreferenced functions (`"funcs"`) and/or
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@@ -762,9 +776,6 @@ If you're using the `X-SourceMap` header instead, you can just omit `sourceMap.u
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- `unused` (default: `true`) -- drop unreferenced functions and variables (simple
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direct variable assignments do not count as references unless set to `"keep_assign"`)
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- `warnings` (default: `false`) -- display warnings when dropping unreachable
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code or unused declarations etc.
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## Mangle options
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- `eval` (default `false`) -- Pass `true` to mangle names visible in scopes
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