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41 lines
816 B
41 lines
816 B
'use strict'; |
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const execBuffer = require('exec-buffer'); |
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const gifsicle = require('gifsicle'); |
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const isGif = require('is-gif'); |
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module.exports = opts => buf => { |
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opts = Object.assign({}, opts); |
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if (!Buffer.isBuffer(buf)) { |
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return Promise.reject(new TypeError('Expected a buffer')); |
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} |
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if (!isGif(buf)) { |
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return Promise.resolve(buf); |
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} |
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const args = ['--no-warnings', '--no-app-extensions']; |
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if (opts.interlaced) { |
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args.push('--interlace'); |
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} |
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if (opts.optimizationLevel) { |
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args.push(`--optimize=${opts.optimizationLevel}`); |
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} |
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if (opts.colors) { |
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args.push(`--colors=${opts.colors}`); |
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} |
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args.push('--output', execBuffer.output, execBuffer.input); |
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return execBuffer({ |
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input: buf, |
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bin: gifsicle, |
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args |
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}).catch(err => { |
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err.message = err.stderr || err.message; |
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throw err; |
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}); |
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};
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